Weeks 27 thru 32 - Gestational Age (Fetal Age - Weeks 25 thru 30): The fetus really fills out over these next few weeks, storing fat on the body, reaching about 15-17 inches long and weighing about 4-4 ½ lbs by the 32nd week. The lungs are not fully mature yet, but some rhythmic breathing movements are occurring. The bones are fully developed but are still soft and pliable. The fetus is storing its own calcium, iron and phosphorus. The eyelids open after being closed since the end of the first...

Weeks 14 thru 16 - Gestational Age (Fetal age - Weeks 12 thru 14): The fetus’s skin is transparent and a fine hair called lanugo begins to form on the head. The fetus begins sucking and swallows bits of amniotic fluid. Fingerprints which individualize each human being have now developed on the tiny fingers of the fetus. Meconium is made in the intestinal tract and will build up to be the baby's first bowel movement. Flutters may be felt in the mom’s growing abdomen as the fetus begins to move...