31 Weeks Pregnant
At 31 weeks pregnant, your baby is about the size of a coconut.
- Length
- 38 cm (15.0 in)
- Weight
- 1 kg (2 lb 3 oz)
- Trimester
- Third
- Month
- Month 7
- Weeks to go
- 9
Size of a coconut
Your baby at 31 weeks
About the size of a coconut, your baby can turn their head from side to side. All five senses are working, and their brain is processing information quickly.
Your body at 31 weeks
You may notice your baby's position more clearly, and leaking colostrum from your breasts is normal.
Common symptoms at 31 weeks pregnant
- Leaky breasts
- Braxton Hicks
- Shortness of breath
- Back pain
Every pregnancy is different. Having none of these symptoms is normal too.
Tips for week 31
- Practice breathing and relaxation techniques for labor.
- Wash baby clothes and bedding.
- Ask your provider about the RSV vaccine, offered at 32 to 36 weeks in some countries during RSV season.
Your week 31 checklist
- Practice breathing for labor
- Wash baby clothes and bedding
- Ask about the RSV vaccine
Helpful at 31 weeks
31 Weeks Pregnant: your questions answered
How big is a baby at 31 weeks pregnant?
At 31 weeks your baby is about the size of a coconut: around 38 cm (15.0 in) long and weighing about 1 kg (2 lb 3 oz). Every baby grows at their own pace.
How many months is 31 weeks pregnant?
31 weeks pregnant is month 7 of your pregnancy, in the third trimester. Your due date is 9 weeks away.
Is it normal to leak colostrum at 31 weeks?
Yes. Some people start leaking colostrum, the first milk, in the third trimester. Breast pads help. Not leaking is also completely normal.
Sources
This guide is written from public guidance by the American College of Obstetricians and Gynecologists (ACOG), the NHS, the CDC and the World Health Organization. Baby sizes are averages; your baby may be bigger or smaller and still perfectly healthy.
General information only, not medical advice.
History of updates
- : Added a weekly checklist and common questions.
- : Matched fruit, length and weight to the Prego app.
- : Published.