Stages of Pregnancy Week by Week

Pregnancy Week 31

Find out how your baby is developing in week 31 and learn how you can practice labor techniques now for a more relaxed and easier delivery experience.

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Watch Your Baby's Growth

Growing Big: Weeks 31 to 34 of Pregnancy
Growing Big: Weeks 31 to 34 of Pregnancy

Your baby now weighs about three pounds, roughly the size of a melon. Get the scoop on how much more she'll grow before she's born--and what new developments she's making right now.

Your Changing Body

You may be noticing more hip and lower-back pain. What gives? Pregnancy hormones are relaxing the ligaments and tendons throughout your pelvic area so that the bones can spread to make room for delivery.

Your Developing Baby

Your baby is gaining more weight than height at this point. Because she's too big to stretch out, she's now forced into the fetal position, which she'll stay in until birth.

Tip of the Week

Strangers on the subway reach out and touch your belly. A woman at the grocery store wrongly warns you against having sex ("It will make you go into early labor!"). Your neighbor asks if you're planning on circumcising your little boy (and clearly has strong opinions on the subject). Sound familiar?

pregnant woman eating healthy

Your Week 31 To-Do List

1. Eat foods rich in iron.

ultrasound week 31

An Inside Look

Take a unique look at Baby's development inside the womb this week.

Pregnant woman crossing off the days until the birth

Your Pregnancy Calendar

Organize your doctor's appointments, save your ultrasound photos, and more--all in one place!

Ask Parents About Week 31

We've got answers to your questions from experts and parents who've been there.

See All Questions or Ask Your Own

Everything in Pregnancy Week 31

More About Your Pregnancy in Week 31

Your Baby

Your Body

  • Genital Changes

    Find out how changes in your genitals may make sex a different experience in the third trimester.

  • Easing Pelvic Pressure

    Remember these tips the next time you feel pressure and discomfort in your pelvic area.

  • The Placenta

    You'll delivery the placenta, or afterbirth, a few minutes after you delivery your baby.

  • Placental Abruption

    Find out if you're at risk for placental abruption and what symptoms to look out for.

  • Placenta Previa

    Placenta previa occurs when the placenta grows over the cervix. Learn more about this condition and how it's treated.

  • Practicing for Labor

    You're about eight weeks away -- time to start practicing for delivery!

  • Relaxing For a Better Birth

    Try to relax now and forget your fears about labor -- letting those build up could make delivery worse, not better.

  • Thinking Ahead to Labor

    Learn about the three stages of labor and what you can expect to experience in each.

  • Will the Baby Fit?

    Don't let rude comments or your own delivery fears make you worry that your baby won't be able to pass through your hips.

Your Self

  • Will I Bond With My Baby?

    No matter how unpleasant your pregnancy may have been up to this point, you'll soon adjust to the new baby and your bond will grow.

  • Doing It All Is Overrated

    Keep things in perspective -- you have a new life to care for, and it just isn't possible to care for her and everything else at the sa...

Diet & Exercise

  • Proper Portion Sizes

    Avoid gaining excess weight by reevaluating your portion sizes with our helpful guide.

  • Desk Posture

    Proper posture is important to keep your body and muscles feeling good.

Q & A