Pregnancy Week 16

You've reached the end of your fourth month! Find out how your baby is developing in week 16 as well as how to deal with stretch marks, changes in your feet, and more.

Watch Your Baby's Growth

Pregnancy Month by Month: Month 4
Pregnancy Month by Month: Month 4

Watch this video to learn what your baby is up to during month 4 of pregnancy and how to keep your social life active even with your growing bump.

Your Changing Body

We know, we know--you probably don't want to hear about it, but constipation, bloating, gas, and indigestion are a big part of pregnancy, and a lot of these symptoms are more prevalent right now. And guess what's to blame? That's right: your hormones!

Your Developing Baby

Your baby's skeleton is continuing to mature from cartilage into bone, but it's still flexible to allow a smooth, easy trip through the birth canal. The umbilical cord is fully developed.

Your Pregnancy

You may feel butterflies in your stomach... and those butterflies may be your baby kicking!

Your Week 16 To-Do List

1. Be sure to get plenty of calcium now.

An Inside Look

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

Your Pregnancy Calendar

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

Ask Parents About Week 16

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 16

More About Your Pregnancy in Week 16

Your Baby

Your Body

  • Changes in the Vagina

    You should expect some changes in the way your vagina looks and feels, as well as how often you want to have sex.

  • Your Energy Returns

    You will probably start to gain back a lot of your old energy this week, though you may still be working through complicated emotions c...

  • Foot Changes

    Find out how to deal with foot pain, swelling and other issues.

  • Late Miscarriage

    Learn what symptoms of miscarriage to look for in your second trimester. Though late miscarriages are rare, they do happen.

  • Stretch Marks

    Stretch marks are the natural result of your skin adjusting to your growing belly.

Your Self

  • Questioning Your Identity

    It's natural to question who you are now and what will change once the baby arrives. Here are a few things to think about to prepare yo...

Diet & Exercise

Q & A