Baby's Development in the Womb: 17-20 Weeks Pregnant

Fonda Mitchell, MD OB/GYN: So, the beginning of your pregnancy, the first trimester is when all of the ground work is laid, all of the organs are established.

Kevin Overbeck, MD OB/GYN: So now it's just growing and growing rapidly.

Fonda Mitchell, MD OB/GYN: At this point in your pregnancy, you're baby is probably around one pound.

Lissa Daimaru-Enoki, MD OB/GYN: Under the ultrasound, you're seeing some movements and now it's really actually looking like a baby, rather than a little peanut.

Fonda Mitchell, MD OB/GYN: A woman tends to feel like now there's more evidence that she's pregnant, so she can still feel that fullness and those around her can start to see that little baby bump form.