36 Weeks Pregnant
Reviewed by Safi Allah Khan
Medically reviewed by: Safi Allah Khan · Written by the Momi team · Last updated 20 October 2026
Quick answer: At 36 weeks pregnant, your baby is about the size of a romaine lettuce, about 47.4 cm (18.7 in) long. You're in the third trimester, in month 9, with 4 weeks to go until your due date. This week's milestone: baby may drop lower. Symptoms vary from person to person.
| Week 36 at a glance | |
|---|---|
| Trimester | Third |
| Month | 9 |
| Weeks to due date | 4 |
| Baby's size | About the size of a romaine lettuce |
| Length | About 47.4 cm (18.7 in) |
| Weight | About 2.6 kg (5.8 lb) |
| This week | Baby may drop lower |
Sizes are typical averages. Before about 20 weeks, length is measured crown to rump; after that, head to heel.
Your baby at 36 weeks
Your baby is about the size of a romaine lettuce and weighs about 2.6 kg (5.8 lb). The baby may drop lower into your pelvis (lightening), which can make breathing easier.
Your body at 36 weeks pregnant
Appointments are often weekly from now. In the US, group B strep screening is usually done between 36 and 37 weeks.
Things to do this week
- Attend your 36-week check. Your provider will check the baby's position.
- Have your bag and car seat ready.
- Learn the signs of labor.
When to call your doctor or midwife
Contact your care team straight away if:
- your baby is moving less than usual, has stopped moving, or the pattern has changed. The NHS says to call immediately, even in the middle of the night
- you have a severe headache, vision changes, pain below your ribs or sudden swelling (possible pre-eclampsia)
- you have intense itching, especially on the palms of your hands or soles of your feet
- you have contractions, your waters break or you bleed before 37 weeks
- you have a fever of 100.4°F (38°C) or higher
If something feels wrong, trust that feeling and call. In an emergency, call your local emergency number.
Track week 36 in Momi
Keep your appointments in Momi as visits become weekly. Momi follows your pregnancy week by week with your baby's size and development, and keeps your diary, bump photos, appointments, kick counts and contractions in one place.
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Keep reading
← 35 weeks pregnant · All weeks · 37 weeks pregnant →
Sources
- ACOG: Changes During Pregnancy (infographic)
- NHS: Your baby's movements
- NHS: Antenatal care and appointments
- CDC: Urgent Maternal Warning Signs
Medical disclaimer: Momi and this website provide general information, not medical advice. Always talk to your doctor or midwife; in an emergency call your local emergency number.
FAQ
How big is a baby at 36 weeks pregnant?
On average, a baby at 36 weeks is about the size of a romaine lettuce: about 47.4 cm (18.7 in), about 2.6 kg (5.8 lb). These are typical averages, and healthy babies vary.
How many months is 36 weeks pregnant?
36 weeks pregnant is in the ninth month of pregnancy and the third trimester. Months don't divide evenly into 40 weeks, so different sources may label the month slightly differently.
What should I do at 36 weeks pregnant?
Attend your 36-week check. Your provider will check the baby's position. Have your bag and car seat ready.
Related guides
Track this in Momi
Momi is a free pregnancy tracker app for iPhone and Android that follows pregnancy week by week, estimates the due date, and keeps a pregnancy journal, weight log, kick counter and contraction timer in one place.
