PregnancyWeek 1
Pregnancy dating usually starts on the first day of your last menstrual period, before conception has occurred. This week helps clinicians estimate a due date using a standard 40-week timeline.
Pregnancy Week by Week — Your Complete Guide from Conception to Birth
Forty weeks. Three trimesters. One complete guide to every stage of pregnancy — what’s happening with your baby, what’s happening in your body, and what to expect at each milestone along the way.
Definition: Pregnancy week by week means tracking pregnancy by gestational age, counted from the first day of your last menstrual period, so appointments, scans, symptoms, and fetal development can be understood on the same timeline.
Pregnancy is measured in weeks because fetal development changes quickly, especially in the first trimester. Week 1 and week 2 usually happen before ovulation and fertilization, which is why a “40-week pregnancy” is closer to 38 weeks of fetal growth.
If you do not know exactly how far along you are, start with a due date calculator. That estimated due date anchors your week, trimester, screening windows, and labor planning.
TL;DR
- Pregnancy lasts about 40 weeks, divided into the first trimester, second trimester, and third trimester.
- Weeks 1–13 cover implantation, early hCG rise, heartbeat detection, organ formation, first appointments, and the highest miscarriage-risk window.
- Weeks 14–27 often bring less nausea, more energy, early movement, the anatomy scan, glucose screening, and the viability milestone around week 24.
- Weeks 28–40 focus on rapid growth, kick counting, fetal position, GBS screening, labor signs, and birth preparation.
- Only about 5% of babies arrive on their exact due date. Going overdue is common, but monitoring usually increases after 40–41 weeks.
- Call your provider promptly for heavy bleeding, fluid leakage, severe pain, severe headache or vision changes, sudden swelling, regular contractions before 37 weeks, fever, or reduced fetal movement.
How Weekly Pregnancy Tracking Works
Clinicians use gestational age to schedule ultrasounds, blood tests, screening windows, anatomy scans, glucose testing, vaccines, growth checks, and induction discussions. Early ultrasound can refine dating, especially if your cycles are irregular.
Research and clinical guidance from groups such as ACOG describe fetal growth by gestational week, but your exact timeline may shift slightly based on scan measurements and your provider’s assessment.
- Confirm your dates. Use your last menstrual period, ovulation date if known, or an early dating scan.
- Read your current week. Focus on baby development, body changes, common symptoms, and upcoming appointments.
- Track patterns. Note nausea, bleeding, headaches, swelling, sleep, mood, contractions, and fetal movement once it begins.
- Prepare questions. Bring concerns to prenatal visits instead of trying to remember them later.
- Call for warning signs. Severe pain, heavy bleeding, reduced fetal movement, or symptoms that feel unsafe should be checked promptly.
All 40 Weeks of Pregnancy — Quick Guides
Jump to any week for baby development, body changes, symptoms, and when to call your provider.
First Trimester: Weeks 1–13
Week 2
Ovulation often occurs around the end of week 2 in a typical 28-day cycle. If sperm meets an egg during the fertile window, fertilization may happen soon after.
Week 3
Fertilization can occur this week, creating a zygote with a unique set of chromosomes. The fertilized egg begins dividing as it travels through the fallopian tube toward the uterus.
Week 4
Implantation commonly happens around this stage as the developing embryo attaches to the uterine lining. Rising hCG levels may make a home pregnancy test positive near the expected period.
Week 5
The embryonic period is underway, and early structures that become the brain, spinal cord, and heart are developing. Many people notice symptoms such as fatigue, breast tenderness, nausea, or a missed period.
Week 6
The embryo is growing quickly, and cardiac activity may be detectable by ultrasound in some pregnancies. The neural tube is closing, making folic acid especially important during early development.
Week 7
Small limb buds are forming, and the embryo’s facial structures are beginning to take shape. Pregnancy hormones may intensify nausea, food aversions, and fatigue for many people.
Week 8
The embryo’s major organ systems continue forming, and fingers and toes are starting to develop. A first prenatal visit often includes health history, lab testing, and an estimated due date review.
Week 9
The embryo is nearing the transition to the fetal stage, with developing eyelids, joints, and external ears. Blood volume and hormonal changes can contribute to headaches, mood shifts, and frequent urination.
Week 10
By week 10, the developing baby is usually called a fetus rather than an embryo. Vital organs are present and continue to mature, while early tooth buds and nail beds begin forming.
Week 11
The fetus is making small movements, although they are usually too subtle to feel. Screening options for chromosomal conditions may be discussed around this time depending on gestational age and care guidelines.
Week 12
The end of the first trimester is approaching, and the placenta is taking on more hormone production. The fetus can open and close tiny hands, and the risk of miscarriage generally declines after this stage.
Week 13
Week 13 often marks the start of the second trimester in many pregnancy calendars. The fetus is growing rapidly, and the intestines are settling into the abdomen after early development.
Second Trimester: Weeks 14–27
Week 14
Facial expressions may begin as the fetus practices small muscle movements. Some first-trimester symptoms ease for many people, although round ligament discomfort or congestion may appear.
Week 15
The fetal skeleton is continuing to harden, and fine hair called lanugo may begin to grow. Blood flow changes can make gums more sensitive and may increase the chance of nosebleeds.
Week 16
The fetus can make coordinated limb movements, though not everyone feels them yet. An expanding uterus may become more noticeable as the abdomen starts to change shape.
Week 17
Fat stores are beginning to develop under the fetal skin, helping with temperature regulation after birth. Increased blood volume can contribute to dizziness, swelling, or visible veins.
Week 18
Many people begin to feel first fetal movements, often described as flutters, between weeks 18 and 22. The ears are developing, and the fetus may respond to sounds as hearing structures mature.
Week 19
Vernix caseosa, a protective waxy coating, is forming on the fetal skin. The uterus continues to grow, which may cause stretching sensations or mild back discomfort.
Week 20
Week 20 is the midpoint of a 40-week pregnancy and is often when a detailed anatomy ultrasound is performed. The scan checks fetal growth, anatomy, placenta location, and amniotic fluid level.
Week 21
The fetus is swallowing amniotic fluid and practicing digestive movements. Many people notice stronger kicks as fetal muscles and coordination improve.
Week 22
The fetus’s eyebrows, hair, and skin layers are becoming more defined. As the uterus rises, heartburn or shortness of breath may become more noticeable.
Week 23
The lungs are developing branches and cells needed for future breathing. Fetal movement patterns may become easier to recognize, although they can still vary day to day.
Week 24
Week 24 is an important developmental milestone because intensive neonatal care may be possible if birth occurs very early. The fetus continues building lung tissue, gaining weight, and responding to light and sound.
Week 25
The fetus is adding body fat and becoming more proportionate. Sleep patterns may begin to emerge, and movement can feel more rhythmic or forceful.
Week 26
The fetal eyes are developing further and may begin to open soon. Hormonal and physical changes can contribute to leg cramps, pelvic pressure, and trouble sleeping.
Week 27
Week 27 is often considered the final week of the second trimester. The brain, lungs, and nervous system are maturing rapidly as the fetus gains weight.
Third Trimester: Weeks 28–40
Week 28
The third trimester begins for many pregnancy calendars at week 28. Prenatal care may include screening for anemia, reviewing glucose test results, and discussing fetal movement awareness.
Week 29
The fetus is building muscle and fat, and movements may feel more pronounced as space becomes tighter. Braxton Hicks contractions can occur as the uterus practices tightening.
Week 30
The fetal brain is forming more grooves and connections as development accelerates. Back pain, reflux, and swelling are common third-trimester symptoms, especially later in the day.
Week 31
The fetus is gaining weight steadily and practicing breathing movements with amniotic fluid. Colostrum, the first milk, may begin leaking from the breasts for some people.
Week 32
Bones are continuing to harden, although the skull remains flexible for birth. Prenatal visits often become more frequent during the third trimester to monitor blood pressure, growth, and symptoms.
Week 33
The fetus is developing more body fat, helping create a rounder newborn appearance. Sleep may be disrupted by fetal movement, frequent urination, or difficulty finding a comfortable position.
Week 34
The lungs and central nervous system continue to mature, and many babies move into a head-down position around this period. Pelvic pressure can increase as the baby settles lower in the uterus.
Week 35
The fetus is nearly full size but continues gaining weight and refining organ function. Group B streptococcus screening is commonly performed between weeks 36 and 37, with timing based on local practice.
Week 36
By week 36, the uterus may feel crowded and movements can shift from sharp kicks to rolls or stretches. Care teams often review labor signs, birth preferences, and when to call or go in.
Week 37
Week 37 is considered early term, meaning many babies born now do well but still benefit from more time to mature. The cervix may begin softening, thinning, or dilating as the body prepares for labor.
Week 38
The fetus continues adding fat and practicing reflexes such as sucking and grasping. Monitoring movement remains important, and any noticeable decrease should be reported to a healthcare professional.
Week 39
Week 39 is considered full term, and the baby’s lungs, brain, and liver are still completing final maturation. Labor may start with regular contractions, water breaking, bloody show, or a combination of signs.
Week 40
Week 40 is the estimated due date week, although many pregnancies naturally continue beyond this point. Care teams may discuss monitoring, induction options, and fetal well-being if labor has not started.
First Trimester: Weeks 1–13
The first trimester is when the placenta begins forming, the neural tube develops, and the baby’s major organs start taking shape. It can also be emotionally difficult because you may feel exhausted, nauseated, anxious, and not visibly pregnant yet.
Weeks 1–3: Dating, Ovulation, and Fertilization
Weeks 1 and 2 are counted before conception because pregnancy dating starts from the first day of your last menstrual period. Around week 3, ovulation and fertilization may occur, and the fertilized egg begins dividing as it travels toward the uterus.
Weeks 4–6: Positive Test, Implantation, and Early Symptoms
Many people discover they are pregnant around week 4, when implantation has occurred and hCG rises enough to turn a home pregnancy test positive. The embryo is still tiny, and some people notice light spotting, mild cramping, breast tenderness, bloating, smell sensitivity, fatigue, or frequent urination. Others feel almost nothing, which can also be normal.
A heartbeat may be seen on transvaginal ultrasound around week 6, though timing varies with ovulation and dating. Nausea can also intensify around this stage. The term “morning sickness” is misleading because nausea can happen at any time of day and affects many pregnant people.
Weeks 7–10: Major Organ Formation and Embryo-to-Fetus Milestone
Weeks 7–10 are a major development window. The brain, spinal cord, heart, limb buds, eyes, kidneys, liver, and digestive structures are forming and maturing. By week 8, major organ systems are underway, and by about week 10, the embryo is typically referred to as a fetus.
The baby’s head is large compared with the rest of the body because the brain is developing quickly. Bones begin to harden, tooth buds form beneath the gums, and fingers and toes continue differentiating. Many first prenatal visits happen around weeks 8–10 and may include bloodwork, urine testing, medical history review, and a dating ultrasound.
Prenatal vitamins with folic acid are important before and during early pregnancy because folate supports neural tube development. Ask your provider before starting, stopping, or changing supplements or medications, especially if you have a chronic condition.
Weeks 11–13: Screening, Placenta Changes, and First-Trimester Relief
Nuchal translucency screening may be offered between weeks 11 and 14, often alongside blood testing or noninvasive prenatal testing depending on your location, age, history, and preferences. The baby can move, open and close tiny hands, and continue rapid brain and organ development, although you usually cannot feel movement yet.
The placenta is taking over more hormone production, which is one reason nausea may begin easing near the end of the first trimester. The risk of miscarriage also drops significantly after a confirmed heartbeat and as pregnancy progresses, which is why many families choose to share their news around this time.
Common first-trimester symptoms: nausea, intense fatigue, breast tenderness, food aversions, heightened sense of smell, frequent urination, mood changes, bloating, and constipation. If nausea affects food, fluids, or daily life, evidence-based ideas in morning sickness remedies for pregnancy can help you prepare questions for your clinician.
Second Trimester: Weeks 14–27
The second trimester is often the most comfortable phase, with improving energy, less nausea, a visible bump, and the first baby movements. It is also when the anatomy scan, fetal growth checks, and many practical decisions begin.
Weeks 14–18: Bump Changes and Early Flutters
By week 14, many people feel a turning point as nausea eases and energy improves. The baby is making reflexive facial movements, swallowing amniotic fluid, and building stronger bones. The placenta has largely taken over hormone production, which can help symptoms settle.
The uterus rises out of the pelvis, clothes may fit differently, digestion may slow, and round ligament twinges can appear. Some people who have been pregnant before notice early fetal movement, called quickening, as early as week 16. First-time parents usually recognize it later, often around weeks 20–22. Early movement can feel like bubbles, flutters, tapping, or a tiny fish movement. If you do not feel anything yet, that is usually normal, especially with a first pregnancy or an anterior placenta.
The baby’s skeletal system is hardening from cartilage to bone, and fine hair called lanugo begins covering the skin.
Weeks 19–22: Anatomy Ultrasound and Halfway Point
The anatomy ultrasound is usually scheduled between weeks 18 and 22. It checks the baby’s brain, heart, spine, kidneys, stomach, bladder, limbs, placenta position, and amniotic fluid. This is often when parents find out the baby’s sex, if they want to know.
By around week 20, the baby can hear internal sounds such as your heartbeat and voice, and may react to movement or noise. The skin is covered in a waxy coating called vernix caseosa, which helps protect it from amniotic fluid. You may notice stronger kicks, stretching sensations, vivid dreams, nasal congestion, heartburn, or back discomfort.
If the scan shows placenta previa, soft markers, growth concerns, or a need for another view, your provider will explain the next step. Many repeat scans are simply because the baby’s position made one image difficult, not because something is wrong.
Weeks 23–27: Viability Window and Glucose Screening
Weeks 23–27 are when fetal movement becomes more noticeable and prenatal care often turns toward maternal health screening. Many practices offer gestational diabetes screening around weeks 24–28, along with anemia checks depending on your care plan.
Week 24 is medically significant because it is often discussed as the threshold of viability: the earliest point when a baby may have a realistic chance of surviving outside the womb with intensive neonatal care. Survival rates at 24 weeks vary widely by hospital resources and individual circumstances, often estimated around 40% to 70%. Outcomes improve dramatically with each additional week in the womb.
The baby’s lungs are developing air sacs, the brain is growing quickly, and sleep-wake cycles may become more obvious.
Common second-trimester symptoms: round ligament pain, nasal congestion, nosebleeds, increased appetite, constipation, skin changes such as linea nigra and melasma, a visible bump, leg cramps, and more recognizable fetal movement. A pregnancy tracker can help organize weekly milestones and appointment questions.
Third Trimester: Weeks 28–40
The third trimester is about growth, lung maturation, fetal position, movement awareness, and preparing for birth. It can feel exciting and physically demanding at the same time, especially as sleep, mobility, digestion, and comfort change.
Weeks 28–32: Growth Spurts, Kick Counting, and Rhythms
From week 28 onward, the baby gains weight rapidly, the brain develops complex connections, and movements may feel more like rolls, stretches, and pushes. The baby’s eyes can open and close, and the baby may respond to light that filters through the abdominal wall.
Many providers recommend paying attention to your baby’s usual movement pattern from around week 28. A baby kick counter can help track 10 movements within a 2-hour window, but call your provider if movement is reduced or feels significantly different. Do not wait overnight if your intuition says something is off.
By week 30, the baby’s brain is growing quickly, bone marrow has taken over making red blood cells, and the baby practices breathing movements by moving amniotic fluid in and out. By week 32, the lungs are producing surfactant, a substance that helps keep air sacs from collapsing after birth. Survival rates for babies born around 32 weeks exceed 95% in many settings, though most still need NICU care.
If you are Rh-negative, your provider may discuss anti-D immune globulin around 28 weeks. Follow your clinician’s plan.
Weeks 33–36: Position, Pelvic Pressure, and Checklists
Weeks 33–36 are when many babies move head-down, though some are still breech or transverse. Your provider may check fetal position by touch, ultrasound, or both. If your baby is breech near week 36, your provider may discuss options such as external cephalic version, a manual technique used to try to turn the baby.
Prenatal visits often become more frequent, and group B strep screening is commonly offered around weeks 35–37. Pelvic heaviness, reflux, swelling, nesting energy, “lightning crotch,” and poor sleep are common. This is also a good time to pack a hospital or birth-center bag, install the car seat, review newborn basics, and use a third trimester checklist for birth preparation.
Weeks 37–40: Term Pregnancy and Labor Signs
At 37 weeks, pregnancy is considered early term. Babies born at 37–38 weeks are early term, 39–40 weeks are full term, 41 weeks is late term, and 42 weeks or beyond is post-term. The brain and liver continue developing in the final weeks, which is one reason many providers avoid early delivery unless there is a medical reason.
During weeks 38–39, the baby continues adding fat to help regulate body temperature after birth. You may lose the mucus plug, notice more Braxton Hicks contractions, or feel “lightening” when the baby drops lower into the pelvis. Only about 5% of babies arrive on their exact due date; your due date is a statistical midpoint, not a deadline.
Labor signs may include regular contractions that grow longer, stronger, and closer together; bloody show; water breaking; back pressure; and a shift in mood or focus. Braxton Hicks often ease with hydration, rest, or position changes, while true labor keeps building. Use a contraction timer to record frequency and duration, and review when to go to the hospital in labor before contractions begin.
Common third-trimester symptoms: back pain, heartburn, Braxton Hicks contractions, shortness of breath, swollen feet and ankles, difficulty sleeping, pelvic pressure, frequent urination, leg cramps, hemorrhoids, and nesting. Knowing the difference between Braxton Hicks and real contractions becomes increasingly important.
Beyond 40 Weeks: Late-Term Pregnancy, Monitoring, and Induction
Roughly half of pregnancies go past the estimated due date. Going overdue is common and is not automatically dangerous, but pregnancy after 40 weeks usually brings closer monitoring and more conversations about induction.
At 41 weeks, your provider may recommend non-stress tests, biophysical profiles, ultrasound checks of amniotic fluid, cervical checks, membrane sweeps, or induction planning depending on your health and local policy. The placenta can become less efficient after 40 weeks, and amniotic fluid, fetal wellbeing, and stillbirth risk are part of late-term decision-making.
Most providers recommend induction sometime between 41 and 42 weeks. After 42 weeks, the risks of stillbirth, meconium aspiration, placental insufficiency, and macrosomia increase. Research summarized by NHS guidance on induction notes that induction may be recommended when continuing pregnancy carries more risk than birth.
If you are approaching 41 weeks, ask what monitoring is planned, what would trigger an induction recommendation, what methods are available, and how your preferences can still be respected. Knowing the stages of labor in advance can help you feel prepared regardless of when labor begins.
Body Changes by Trimester
Pregnancy does not only happen to the baby. Your hormones, blood volume, metabolism, uterus, ligaments, posture, digestion, and pelvic support all adapt across pregnancy.
First Trimester: The Invisible Overhaul
Blood volume begins increasing and may eventually rise 40–50% above pre-pregnancy levels. Progesterone surges, slows digestion, and relaxes smooth muscle, which can contribute to bloating, constipation, and frequent urination. Your heart rate rises, your kidneys filter blood more efficiently, breast tissue begins changing for eventual milk production, and the uterus starts expanding even before a bump is visible.
Second Trimester: The Visible Shift
The baby bump often appears around weeks 14–16 for people who have been pregnant before and weeks 18–20 for first pregnancies. Your center of gravity shifts forward as the uterus grows. Skin changes may include linea nigra, melasma, and stretch marks. Relaxin helps soften ligaments for birth but can also make joints feel less stable.
Third Trimester: The Endurance Phase
The uterus can press against the diaphragm, lungs, stomach, bladder, and pelvis, causing shortness of breath, heartburn, pelvic pressure, and frequent urination. Many people gain about 25–35 pounds total by the end of pregnancy, though recommended weight gain varies by pre-pregnancy body size and medical factors. Fluid retention can cause swelling in the feet, ankles, and hands. In the final weeks, lightening may ease breathing but increase bladder and pelvic pressure as the cervix starts softening and thinning for labor.
Emotional Health During Pregnancy
Pregnancy emotions can shift week to week. Hormonal changes, uncertainty, body changes, previous loss, fertility history, finances, identity, and birth fears can all sit beside genuine excitement.
Early pregnancy often brings secrecy and worry. The second trimester may bring relief, but also decisions about testing, names, childcare, and work. The third trimester can feel urgent: you may want the baby here and also feel scared of labor, recovery, or parenting.
Gentle breathing, journaling, therapy, community support, and pregnancy meditation for stress and sleep can help regulate your nervous system. Seek professional support quickly if anxiety, panic, sadness, or intrusive thoughts feel persistent or unsafe.
Prenatal Appointments and Tests by Week
Prenatal appointment timing varies, but many uncomplicated pregnancies follow a rhythm: monthly visits early on, every two weeks in late pregnancy, and weekly visits near the end. High-risk pregnancies may need more frequent monitoring.
- Early pregnancy: dating scan when indicated, first-trimester bloodwork, urine testing, medical history review, and genetic screening options.
- Weeks 11–14: nuchal translucency screening may be offered, sometimes with blood testing or noninvasive prenatal testing.
- Weeks 18–22: anatomy ultrasound to assess fetal structures, placenta position, and amniotic fluid.
- Weeks 24–28: gestational diabetes screening and, depending on your care plan, anemia checks.
- Third trimester: Rh testing and treatment when indicated, Tdap vaccination, growth and blood pressure checks, fetal position assessment, and group B strep screening around weeks 35–37.
Bring a written question list to appointments. In a short visit, it is easy to forget the concern that worried you at 2 a.m.
Birth Preparation Across the Final Weeks
Birth preparation is most useful when it is practical, flexible, and started before you are exhausted. By the late second trimester or early third trimester, begin learning about labor stages, comfort measures, feeding choices, newborn care, postpartum support, and your preferences for different birth settings.
A birth plan should be a communication tool, not a script. Include what helps you feel safe, who can speak for you, pain-relief preferences, mobility wishes, monitoring questions, cesarean preferences, and feeding support. Practicing breathing and comfort positions can make labor feel less mysterious, even though no method can guarantee a specific outcome. For step-by-step planning, see how to prepare for labor in late pregnancy.
When to Call Your Doctor or Midwife During Pregnancy
Most pregnancy symptoms are uncomfortable but harmless. Some are not. Call your doctor, midwife, triage unit, or emergency service if you notice symptoms that could signal bleeding, preterm labor, infection, preeclampsia, or reduced fetal wellbeing.
- Vaginal bleeding, especially heavy bleeding or bleeding with pain.
- Severe abdominal or pelvic pain, especially one-sided pain, shoulder-tip pain, fainting, or pain with bleeding.
- Fluid leaking from the vagina, which may mean your waters have broken; before 37 weeks this needs urgent evaluation.
- Reduced or absent fetal movement after movement is established, or a major change in your baby’s usual pattern.
- Severe headache, vision changes, or sudden swelling of the face, hands, fingers, or around the eyes, which can be signs of preeclampsia.
- Regular contractions before 37 weeks, painful cramping, or pressure that could signal preterm labor.
- Fever above 100.4°F (38°C), chest pain, severe shortness of breath, seizures, painful urination with fever, or blood in urine.
When in doubt, call. Your provider would rather hear from you than have you wait at home worried.
How Pregnancy App Supports Weekly Tracking
Pregnancy App is a free pregnancy tracker on iOS and Android that follows your pregnancy week by week from the moment you enter your due date.
Features include:
- Weekly pregnancy updates with baby size, development, and symptoms for your stage.
- Due date calculator using your last menstrual period and cycle length for an adjusted estimate.
- Baby kick counter to log fetal movements from the third trimester onward.
- Contraction timer to track contraction duration, frequency, and intervals during labor.
- Hypnobirthing meditations and breathing exercises for relaxation, birth preparation, and labor coping. Learn more about hypnobirthing.
Everything works offline, including the contraction timer, meditations, and kick counter. Data stays on your device, with no account, login, or email required. If you are comparing options, see the best pregnancy tracker app comparison.
Frequently Asked Questions
How many weeks is a full-term pregnancy?
A full-term pregnancy is 39 to 40 weeks, measured from the first day of your last menstrual period. Babies born at 37–38 weeks are considered early term, 39–40 weeks is full term, 41 weeks is late term, and 42 weeks or beyond is post-term.
What are the three trimesters of pregnancy?
The first trimester covers weeks 1–13 and includes early organ formation. The second trimester runs from weeks 14–27 and often includes first movement, the anatomy scan, and glucose screening. The third trimester runs from week 28 to delivery and focuses on rapid fetal growth, kick awareness, fetal position, and labor preparation.
When will I feel the baby move?
Most people feel first fetal movements, called quickening, between weeks 16 and 25. People who have been pregnant before may recognize movement as early as week 16, while first-time parents often notice it around weeks 20–22. An anterior placenta can make movement harder to feel early on.
What happens at the 20-week anatomy scan?
The anatomy scan is a detailed ultrasound, usually done between weeks 18 and 22. The sonographer checks the baby’s brain, heart, spine, kidneys, limbs, other organs, placenta location, and amniotic fluid. They can often tell the baby’s sex if you want to know. If something needs another look, your provider may recommend follow-up imaging or testing.
When is a baby considered viable outside the womb?
Viability depends on gestational age, hospital resources, neonatal care, and individual circumstances. Around 24 weeks, survival with intensive care is often estimated around 40–70%, and outcomes improve significantly with each additional week. Babies born before 24 weeks have very high risks of serious complications.
What are signs that labor is starting?
Labor may begin with regular contractions that become longer, stronger, and closer together; bloody show; water breaking; pelvic pressure; back pressure; or a change in focus and mood. If contractions follow a steady pattern, such as every 5 minutes, lasting 1 minute, for at least 1 hour, contact your provider or follow your hospital’s instructions.
What happens if you go past your due date?
About half of pregnancies go past the estimated due date. If you reach 41 weeks, your provider will likely increase monitoring with non-stress tests, ultrasound fluid checks, or other assessments. Many providers recommend induction between 41 and 42 weeks because risks rise after 42 weeks.
Can an app track my pregnancy week by week?
Yes. Pregnancy tracker apps can provide weekly baby development updates, symptom guidance, reminders, and tools. Pregnancy App includes week-by-week updates, a contraction timer, kick counter, due date calculator, and hypnobirthing meditations, all stored locally on your device with no account required.
Limitations & Safety
- This guide is educational, not medical advice. Your provider’s assessment matters more than any generic weekly checklist.
- Dates and development vary. Ovulation timing, cycle length, early scans, and individual growth can shift your pregnancy timeline.
- Apps and calculators cannot diagnose complications. They cannot assess bleeding, preeclampsia, infection, labor progress, or fetal wellbeing.
- Seek urgent care for warning signs. Heavy bleeding, severe pain, fluid leakage, reduced fetal movement, severe headache, vision changes, fever, or regular contractions before 37 weeks need prompt medical guidance.
- Pregnancy App is not affiliated with a hospital, clinic, or medical organization. Always follow your doctor, midwife, or OB-GYN’s recommendations for screenings, monitoring, and treatment.