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Highlights this week

Coming into focus

Your baby's pupils can constrict and expand, and she may be able to detect the dim outlines of shapes, but not their colors.

Managing labor pain

Most women choose medication to help them cope with labor pain. But there are also benefits to a "natural" unmedicated approach.

Are you okay?

If you're depressed, you might be hiding your emotions to avoid hurting others. Take our quiz to see if you may need help.

31 weeks is how many months?

You're in your seventh month!

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Baby development at 31 weeks

Fattening up

She can turn her head from side to side, and her arms, legs, and body are beginning to plump up as needed fat accumulates underneath her skin.

Moving a lot

Your baby's probably moving a lot, so you may have trouble sleeping with all the kicks and somersaults keeping you up. Take comfort: All this moving is a sign that your baby is active and healthy.

baby plumping up as fat builds up under skin
Your baby at 31 weeks Tap the plus for more details
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Your baby is about the size of a coconut

16 ¼
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head to toe
3 ¼
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Pregnancy symptoms during week 31

Braxton Hicks contractions

Have you noticed the muscles in your uterus tightening now and then? Many women feel these random contractions – called Braxton Hicks contractions – in the second half of pregnancy. Often lasting about 30 seconds, they're irregular, and at this point, should be infrequent and painless.

Leaky breasts

You may have noticed some leaking of colostrum, or "premilk," from your breasts lately. If so, try tucking some nursing pads into your bra to protect your clothes. (If not, it's nothing to worry about. Your breasts are making colostrum even if you don't see any.)

Don't see your symptom?
Wondering about a symptom you have? Find it on our pregnancy symptoms page.

baby in body at 31 weeks
Your body at 31 weeks Tap the plus for more details

Pregnancy checklist at 31 weeks

Commemorate your belly

Celebrate your amazing pregnant belly by getting a henna design applied (go to an artist who uses the pure, natural kind) or making a belly cast. You may also want to splurge on professional pictures of your pregnant self.

Start lining up helpers

If friends and family have offered to pitch in after your baby's born, make a support plan now. Set up a schedule so that each person has a specific task (like bringing a meal) and date to do it. Or, even better, ask a friend to coordinate this for you.

31 weeks pregnant bellies

This week's video


BabyCenter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world. When creating and updating content, we rely on credible sources: respected health organizations, professional groups of doctors and other experts, and published studies in peer-reviewed journals. We believe you should always know the source of the information you're seeing. Learn more about our editorial and medical review policies.

ACOG. 2015. FAQ156. Prenatal development: How your baby grows during pregnancy. American College of Obstetricians and Gynecologists. http://www.acog.org/Patients/FAQs/Prenatal-Development-How-Your-Baby-Grows-During-Pregnancy#one [Accessed May 2019]

ACOG. 2014. FAQ086. Medications for pain relief during labor and delivery. American College of Obstetricians and Gynecologists. http://www.acog.org/Patients/FAQs/Medications-for-Pain-Relief-During-Labor-and-Delivery [Accessed May 2019]

La Leche League International. 2016. What is colostrum? How does it benefit my baby? http://www.lalecheleague.org/faq/colostrum.html [Accessed May 2019]

Mayo Clinic. 2015. Fetal development: The third trimester. http://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/fetal-development/art-20045997 [Accessed May 2019]

MedlinePlus (ADAM). 2015. Fetal development. https://www.nlm.nih.gov/medlineplus/ency/article/002398.htm [Accessed May 2019]

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Kate Marple is a writer and editor who specializes in health, pregnancy, and parenting content. She's passionate about translating complicated medical information into helpful pregnancy and parenting advice that's easy to understand. She lives in San Francisco with her family.
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