36 Weeks

Your baby is still packing on the pounds — at the rate of about an ounce a day. He now weighs almost 6 pounds and is more than 18 1/2 inches long (about the size of a head of romaine lettuce). He's shedding most of the downy covering of hair that covered his body as well as the vernix caseosa, the waxy substance that covered and protected his skin during his nine-month amniotic bath. Your baby swallows both of these substances, along with other secretions, resulting in a blackish mixture, called meconium, will form the contents of his first bowel movement.

At the end of this week, your baby will be considered "early term." (Full-term is 39 to 40 weeks. Babies born before 37 weeks are pre-term, 41 weeks is late term, and those born after 42 are post-term.) Most likely your baby is already head-down. But if not, your practitioner may suggest scheduling an external cephalic version (ECV). That's a fancy way of saying that your practitioner will apply pressure to your abdomen to try to manipulate your baby into a head-down position.

from babycenter