Pregnancy25 Weeks Pregnant: What to Expect This Week
Quick Answers at Week 25
At 25 weeks pregnant, your baby is about the size of a rutabaga or cauliflower, and the main focus is steady growth, stronger movement, and routine screening such as the glucose test.
- Baby size: about 13.5 inches head to heel and roughly 1.5 to 1.7 pounds
- Symptoms: stronger movement, heartburn, constipation, backache, pelvic pressure, leg cramps, sleep changes
- Appointments: blood pressure, urine testing, fundal height, fetal heartbeat, and possible gestational diabetes screening
- Ultrasound: not always routine this week unless your clinician is checking growth, placenta position, or a specific concern
Week 25 at a Glance
| Topic | Week 25 |
|---|---|
| Baby size | Often compared with a rutabaga, cauliflower, or small squash; about 13.5 inches and 1.5 to 1.7 pounds |
| Ultrasound | Usually done only if your OB-GYN or midwife wants to check growth, anatomy follow-up, fluid, or placenta-related questions |
| Symptoms | Heartburn, constipation, back or pelvic discomfort, leg cramps, Braxton Hicks, and more noticeable movement |
| Appointments | Routine prenatal checks may include blood pressure, urine testing, fundal height, weight, and fetal heartbeat |
| Key milestone | Lung, brain, nervous system, and fat development continue while movement patterns become easier to notice |
TL;DR
At 25 weeks pregnant, your baby is roughly rutabaga- or cauliflower-sized and is gaining weight while the lungs, brain, and nervous system keep developing. This is also a common window for glucose screening and routine prenatal checks.
- Baby size is about 13.5 inches head to heel and around 1.5 to 1.7 pounds.
- Symptoms at week 25 often include heartburn, constipation, pelvic pressure, backache, leg cramps, and stronger kicks.
- Call your clinician for bleeding, fluid leakage, severe pain, fever, sudden swelling, or a clear decrease in movement.
What does week 25 of pregnancy mean?
25 weeks pregnant means you are in the second trimester and about 15 weeks from a 40-week due date, usually counted from the first day of your last menstrual period. At 25 weeks gestation, your baby is growing quickly, movement is often easier to recognize, and prenatal care focuses on growth, blood pressure, urine checks, and screening for conditions such as gestational diabetes.
Unlike early pregnancy week stages that focus on implantation, hCG changes, and the first gestational sac, this stage is more about fetal growth, placenta function, movement patterns, and maternal comfort. Dates can vary, so your OB-GYN or midwife’s estimate is the one to follow.
How is your baby developing during week 25?
During week 25, the baby’s lungs, brain, nervous system, hearing, and fat stores are continuing to mature. Many clinicians describe this as a period of rapid growth, with the lungs still immature but developing air sacs and surfactant-producing cells that will matter after birth.
The brain and nervous system are becoming more organized, hearing may be more responsive, and sleep-wake rhythms can become easier to notice. The placenta continues supporting oxygen and nutrient transfer while your baby practices stretches, rolls, and kicks.
For a broader view of each stage, see the pregnancy week-by-week guide.
How big is your baby at week 25?
At week 25, baby size is about 13.5 inches from head to heel and roughly 1.5 to 1.7 pounds, often compared with a rutabaga, cauliflower, or small squash. Healthy babies vary, so a single measurement is less important than the overall growth pattern your clinician sees over time.
Ultrasound weight estimates can be helpful, but ACOG and NHS-style clinical guidance commonly treat them as estimates rather than exact measurements. If you are confirming dates or comparing appointment estimates, a due date calculator can help you understand how pregnancy weeks are counted.
What symptoms and movement are common this week?
Symptoms at week 25 commonly include heartburn, constipation, bloating, nasal congestion, skin stretching, backache, pelvic pressure, leg cramps, sleep changes, and more noticeable fetal movement. Your uterus is rising above the belly button, which can change posture, breathing comfort, and how pressure feels in your pelvis.
Many clinicians note that movement may feel more regular now, but patterns can still shift because the baby is small enough to change position often. Formal kick counting is often introduced closer to 28 weeks or when a clinician recommends it; a clear decrease in usual movement should be discussed with your maternity care team the same day.
Logging patterns in a pregnancy tracker can make it easier to describe changes at your next visit. If your clinician suggests monitoring movement, a baby kick counter can help you record what you notice.
What appointments and tests happen around week 25?
Around week 25, prenatal appointments commonly include blood pressure, weight, urine testing, fundal height measurement, and listening to the fetal heartbeat. Many practices schedule gestational diabetes screening between 24 and 28 weeks, sometimes along with a blood count or antibody testing depending on your history.
If you are Rh-negative, your care team may discuss anti-D treatment timing, commonly given around 28 weeks. An ultrasound is not always routine at this stage, but your OB-GYN or midwife may recommend one to check growth, fluid, placenta position, or a specific concern.
This is also a good time to ask what symptoms should prompt a call before your next routine visit.
What helps during week 25?
This week, helpful steps include taking prenatal vitamins as directed, getting folic acid from your supplement or diet plan, staying hydrated, adding fiber for constipation, using sleep support, and choosing gentle movement if your clinician says it is safe. You do not need every labor or postpartum decision finalized, but learning the basics can reduce uncertainty.
It is normal to feel excited one day and overwhelmed the next; pregnancy at this stage can bring both reassurance and new questions. You can start with a simple labor preparation checklist and adjust it to your care plan.
You can also compare last week’s changes at 24 weeks pregnant and look ahead to 26 weeks pregnant.
Limitations & Safety
This page is general education, and urgent or unusual symptoms should be checked with a qualified maternity professional.
- This information is not a diagnosis, treatment plan, or substitute for prenatal care.
- Contact your clinician promptly for vaginal bleeding, fluid leakage, severe abdominal pain, severe headache, vision changes, chest pain, fainting, fever, or sudden swelling.
- Report a clear decrease in your baby’s usual movement pattern, especially if it persists after rest, food, hydration, or position changes.
- If you have a high-risk pregnancy, twins, placenta concerns, hypertension, diabetes, or a history of preterm birth, follow your individualized care plan.
- Emergency symptoms should be handled through local emergency services or your maternity unit, not an app or website.
Frequently Asked Questions
How many months is 25 weeks pregnant?
At this stage, you are about six months pregnant, depending on how months are counted. Many clinicians track pregnancy in weeks rather than months because months vary in length and prenatal timing is week-based.
How big is my baby at week 25?
Your baby is often about 13.5 inches from head to heel and around 1.5 to 1.7 pounds. Clinicians may compare this with a rutabaga, cauliflower, or small squash, but individual growth varies.
What symptoms are common at week 25?
Common symptoms include heartburn, constipation, backache, pelvic discomfort, leg cramps, nasal congestion, skin stretching, Braxton Hicks, and stronger fetal movement. Contact your clinician for severe pain, bleeding, fluid leakage, fever, sudden swelling, or other concerning changes.
Should I be counting kicks at 25 weeks gestation?
Formal kick counting is often introduced closer to 28 weeks unless your clinician recommends starting earlier. Many clinicians advise paying attention to your baby’s usual pattern and calling the same day if movement clearly decreases.
What appointments happen around week 25?
Routine visits may include blood pressure, urine testing, weight, fundal height, and fetal heartbeat checks. Gestational diabetes screening is commonly done between 24 and 28 weeks, depending on your practice and medical history.
Is an ultrasound routine when pregnant 25 weeks?
An ultrasound is not always routine at this point. Your OB-GYN or midwife may order one if they want to check growth, amniotic fluid, placenta position, anatomy follow-up, or a specific symptom.