15 weeks

"Your baby now measures nearly 4 inches from crown to rump, about the length of a Kit Kat "finger" (regular-size, not the Big one you get at the movies), and weighs almost 2 ounces.
Although many women don't start feeling the baby move until the 17th week (or later), your baby has been having his own party in the amniotic sac he calls home. If you feel a little flutter in your belly this week, don't discount it as gas or hunger. It could be your babe banging around.

Here's more to look forward to:

Baby's head is now resting on his well-formed neck instead of directly on his shoulders like Igor.

He's beginning to grow eyebrows and eyelashes this week.

The hair on the head also begins to grow.

Although baby's eyes are sealed shut, he's now able to sense light. His eyes and ears finally look like real baby features now. "