Your Pregnancy: Week 4

Your tiny little baby is busily settling into her new home (your uterus), though it may just feel like PMS to you. So in addition to the miracle of life, you can also welcome these beautiful first gifts of motherhood: bloating, cramping, and maniacal mood swings.

> Could it be a false negative?
> What should you do after a positive test?
> Is cramping a bad sign?
> See all first trimester Q&As

Baby's now the size of a poppyseed!
Now safe in your womb, the ball of cells (blastocyst) is splitting into the embryo (your future child) and placenta. Outside this microscopic speck, the amniotic sac and fluid are forming into protective cushioning.

To-do:
> Start your prenatal vitamins
> Get eating on track
> Go to your checklist

[ tip ] Thread your wedding ring through a pretty chain and start wearing it as a necklace. Here's to avoiding the ring-stuck-on-a-swollen-finger crisis in the months to come!

> Chat with other moms-to-be who share your due date

> Read more about being 4 weeks pregnant

All medical information reviewed by Dr. Geeta K. Swamy, Duke University Medical Center OB/GYN Department

Apr 23, 2009