16 Weeks

The heart beats between 110 and 180 times per minute and pumps about 25 quarts of blood each day. You can see the gender of the baby on ultrasound. If she is a girl, millions of eggs are now forming in her ovaries. At almost 5 inches in length and weighing nearly 4 ounces, the baby can coordinate the movement of its arms and legs, though his or her mother will not likely feel it yet.