In week nine of pregnancy, your baby will have a really big head but, no, he isn't conceited! Instead, he or she is just top-heavy and is bu...

Welcome to pregnancy week eight, where your now kidney bean-sized fetus has developed twenty finger and toe buds! And that's not all the fet...

Now that you've entered week seven of pregnancy, you'll be even more connected to your baby - via a fully formed and functional umbilical co...

Ready for your video update for week six of pregnancy? We thought so! As fetal development continues, your little one is now the size of a l...

Welcome to week five of pregnancy! Your baby has grown from the size of a poppy seed to the size of a sesame seed. In week five, your baby's...

In week four of pregnancy, you probably just found out that you're pregnant, but your baby has been growing since the moment of conception. ...

If you're pregnant, you may have heard about the nuchal test, a prenatal screening that can help determine if your baby is likely to have Do...

Down syndrome is a birth defect caused by chromosomal abnormalities. You may choose to test for this before your baby is even born, using ch...

If you're pregnant, you may wonder if you can prevent birth defects. Although there is no way to guarantee that your infant will be born wit...

Some birth defects are due to chromosomal abnormalities in a baby. These include trisomy abnormalities like Down syndrome, and monosomy ones...