18 weeks! 4-13-13

"Head to rump, your baby is about 5 1/2 inches long, and he weighs almost 7 ounces (about the size of a bell pepper). He's busy flexing his arms and legs — movements that you'll start noticing more and more in the weeks ahead. His blood vessels are visible through his thin skin, and his ears are now in their final position, although they're still standing out from his head a bit. A protective covering of myelin is beginning to form around his nerves, a process that will continue for a year after he's born. -Baby Center