Your baby is also growing more skin and hair, and even eyebrows. Twin development at week 15 Your babies’ length from crown to rump is around 3 1/2 inches, and they each weigh 1 1/2 ounces.

Take advantage if your partner is up for it. At 15 weeks pregnant, your baby is 4.75 inches long (120 millimeters). Your baby is now the size of a can of LaCroix. Cheers! This week, your baby is ...

If you are 15 weeks pregnant, you are in your 4th month ... your fetus must be only about 70 grams. Development of the baby Layer of hair A layer of fine downy hair called lanugo would have ...

Use this interactive pregnancy timeline tool to track your baby's development week by week – from conception to delivery – and learn what to expect at each stage of your pregnancy, trimester ...

Baby: Your baby is growing ... You've probably gained about 15 lbs. on average. You'll start gaining more weight now -- about 1-2 lbs. a week. Tip of the Week: Start learning to sleep on your ...