30 weeks

Rock-a-bye baby! Indeed, your sweetie goes to sleep now. When he's not asleep, he's busy making faces, bopping around, hiccuping, and nudging you. He weighs about 3 pounds and is 17 inches long. Hhe's close to having a fully functioning nervous system that regulates the body -- his nerve fibers are now encased in myelin, which allows impulses to travel faster.
Your Body: The not-so-pretty side of pregnancy reappears in the third trimester: constant urination, swollen feet, painful hemorrhoids, searing back pain, and burning acid reflux. It's no surprise that you aren't getting much sleep, giving rise to yet another complaint: insomnia. In fact, some experts say prenatal insomnia prepares you for life with a newborn. But in about ten weeks, your aches and pains will fade away, and you will have a cooing baby in your arms.