Pregnancy Development Stages

Pregnancy is divided into three distinct stages: the first trimester, second trimester, and third trimester. Vital fetal growth and development happens in each of them, and your body also changes along the way. Check out our guide on pregnancy stages to learn about ultrasounds, important prenatal tests, fetal development, health concerns, about more.
Illustration of a baby's heartbeat
When Can You Hear a Baby's Heartbeat?
mom holding pregnant belly
Your First Trimester of Pregnancy, Week-by-Week
Your Second Trimester, Week-by-Week