How Your Baby Develops in the Final Four Weeks of Pregnancy

From its headquarters in Harrisburg, Pennsylvania, Real Alternatives coordinates statewide parenting and pregnancy support programs in Indiana, Michigan, and Pennsylvania. For 20 years, tens of thousands of women haven been helped. Real Alternatives is dedicated to providing educational resources to expectant mothers. In the “Hear the Heartbeat” section of its website, Real Alternatives discusses how pre-born children develop. 
 
At week 35 the baby’s hand has a firm grasp. It is usually at the end of the third trimester that the baby’s head will dip or drop into the pelvis. This change often helps the mother to breathe easier.
 
Between weeks 36 and 37, the baby’s weight can be 6.5 pounds. The baby’s length is about 13.5 inches, from crown to rump. The heart is pumping 300 gallons of blood every day. The baby is fully capable of living outside the womb with minimal intervention. At week 37, the baby’s downy hair and vernix is absorbed into the amniotic fluid and swallowed by the baby. This will produce the baby’s first bowel movement after birth.
 
At week 38, the baby’s heartbeat can be heard outside the uterus. The baby is approximately 19 to 20 inches in length and typically weighs between six and eight pounds. The baby is ready at any moment to come into the world.