How the Baby's Growing After 14 Weeks

Head to bottom, the baby's 3 1/2 inches long — about the length of a lemon — and weighs about 1 1/2 ounces. The body's growing faster than the head, which now sits upon a more well-defined neck. By the end of this week, it's arms will have lengthened and will be in proportion to the rest of the body. (It's legs still have some growing to do, though.)

The baby is starting to develop an ultra-fine, downy covering of hair all over the body (called lanugo). The baby's liver starts secreting bile this week, a sign that it's already functioning properly, and it's spleen starts contributing to the production of red blood cells. It's also producing and discharging urine into the amniotic fluid, a normal process that it'll keep up until birth.

I still can't feel the baby's movements, but the hands and feet (which are now half an inch long) are more flexible and active. Thanks to brain impulses, the baby's little facial muscles are getting a workout squinting, frowning, and grimacing. The baby can grasp now, too, and may be able to suck it's thumb.