Curious about how your baby is developing in the womb Here's a breakdown of fetal development week by week. See twins in the womb week by week as they develop Learn when their hearts beat, when their major organs develop, and when they're likely to be born. Use our pregnancy due date calculator to find your estimated due date and see major milestones throughout pregnancy. Trimesters break pregnancy into three stages
The first trimester lasts until 13 weeks, the second trimester goes from week 14 to 27, and the third trimester starts at week 28 and continues until birth Babies rarely arrive exactly on their due date! How big is your baby Every pregnancy belly is beautiful, and no two look exactly the same See our gallery of baby bumps from 4 to 40 weeks pregnant. At 6 weeks, your baby is the size of a lentil and you may begin to have morning sickness
At 8 weeks, your baby is the size of a raspberry and you may be starting to think about prenatal care Learn more about what to expect at 8 weeks pregnant. At 4 weeks, your baby is the size of a poppy seed
WATCH
