Pregnancy Week 5

Learn what is happening with your baby's development in week five. Plus, learn about miscarriage, changes in your complexion, and what healthy foods you should be eating now.

Watch Your Baby's Growth

An Embryo Forms: Weeks 4 to 8 of Pregnancy
An Embryo Forms: Weeks 4 to 8 of Pregnancy

Chances are you have no idea you're pregnant yet¿but your body is already hard at work. Watch as the egg undergoes its wondrous transformation to embryo.

Your Changing Body This Week

Your hormones are raging, and you may be, too. Mood swings are common beginning this week, so make sure to get enough sleep, because nothing is worse than being grumpy and tired!

Your Baby This Week

Your baby's heart beats for the first time this week, but you and your doctors won't be able to hear it just yet. The embryo is divided into three layers now, each of which will develop into different organs and parts of your baby.

Your Pregnancy

Your little boy or girl has been growing a lot, and you'll notice some big changes in yourself as well--especially in your moods.

Your Week 5 To-Do List

1. Pick up a pregnancy book.

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 5

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 5

More About Your Pregnancy in Week 5

Your Baby

Your Body

  • Bleeding During Pregnancy: What's Normal, What's Not

    When you're expecting a baby, any kind of bleeding or spotting is unnerving. Learn the causes of bleeding during pregnancy, and what yo...

  • Your Growing Breasts

    Your belly isn't the only thing that grows during pregnancy. Find out how your breasts change.

  • Complexion Problems

    All those hormones can wreak havoc on your skin. Here's the lowdown on your pregnancy complexion.

  • Ectopic Pregnancy

    A common cause of bleeding in the first trimester, ectopic pregnancies occur in one out of every 100 cases. Here's what you need to kno...

  • Genetic Screening

    Genetic screening is an optional test offered during pregnancy. Find out if these tests are necessary for you and your baby-to-be.

  • Increased Urination

    Running to the restroom? This pregnancy symptoms is super common (and rather uncomfortable).

  • Miscarriage

    Miscarriages most often occur within the first three months of pregnancy. These important factors are essential must-knows for all moms...

  • Finding a Good Pregnancy Bra

    As your pregnancy breasts develop, be sure you take care of them! Check out our tips on finding a new bra.

Your Self

Diet & Exercise

  • The Buzz About Caffeine

    To drink it or not to drink it, that's the question for so many pregnant moms. Here's the scoop on caffeine during pregnancy.

  • Your First Trimester Diet

    Eating well now and throughout your pregnancy is crucial. Make sure you get off on the right foot.

  • Reading Food Labels

    You're eating for two! The big difference from your pre-pregnancy diet isn't so much the quantity, but the quality of food. Here's what...

  • Your Calorie Needs

    You don't need that many more calories during pregnancy to maintain a healthy diet for you and baby. Here's what you should know.

Q & A