Week 14

Head to bottom, your baby's 3 1/2 inches long — about the length of a large lemon — and weighs about 1 1/2 ounces. Her body's growing faster than her head, which now sits upon a more well-defined neck. By the end of this week, her arms will have lengthened and will be in proportion to the rest of her body. (Her legs still have some growing to do, though.) She's starting to develop an ultra-fine, downy covering of hair all over her body (called lanugo).
You still can't feel your baby's movements, but her hands and feet which are now half an inch long are more flexible and active. Thanks to brain impulses, her little facial muscles are getting a workout as she squints, frowns, and grimaces. She can grasp now, too, and she may be able to suck her thumb.