21 – 28 Weeks Pregnant Body fat increases more rapidly, as does the brain’s development. Fingernails reach finger ends, bones are fully developed, and eyes open and close. The respiratory system continues to develop, and each day brings more milestones. The baby is about 15 inches long now and weighs in at a bit over 2 1/2 pounds.

29 – 33 Weeks Pregnant Now the baby weighs about 4 1/2 pounds and is 17 inches long. Body fat is really increasing now, and breathing becomes more rhythmic, though the lungs are still not mature. The baby is covered with a fine hair, called lanugo. Calcium, iron and phosphorus are being stored in the baby’s body.

34 – 40 Weeks Pregnant At 37 weeks the baby is considered full term and may be up to 21 inches long, typically weighing from 5 to 8 pounds. Most of the lanugo is gone, except on the upper back and shoulders. Actual hair may appear on the baby’s head, but some babies are born bald. Some pregnancies can last up to 42 weeks, although doctors generally do not allow women to go past that. One thing left --Click to get to the big day!