15 weeks: orange

Rapid growth of your baby continues at this point. The skin is very thin and you can see the blood vessels clearly underneath. The scalp hair pattern is developing while fine hair (called lanugo) covers the baby's body. Your baby is approximately 3.7 to 4.1 inches and weighs about 2 ounces.

Your baby's taste buds already look like a mature adult's and doctors have learned that the amniotic fluid that surrounds it can smell strongly of curry, cumin, garlic, onion and other essences from a mother's diet. Your baby's bones continue to harden and retain calcium very rapidly.

Her legs are growing longer than her arms now, and she can move all of her joints and limbs. Although her eyelids are still fused shut, she can sense light. If you shine a flashlight at your tummy, for instance, she's likely to move away from the beam.