Week 17

Fetal Development:
This is a period of rapid growth as the fat begins to form underneath the baby's skin. Baby and placenta are about equal in size now. The tiny heart is pumping as much as 25 quarts of blood a day! The reflexes are probably in place now as the baby sucks, swallows and blinks.

Maternal Changes:
Your uterus is about 1 1/2 to 2 inches below your belly button. The baby is going through a growth spurt and chances are, you may be gaining too! Average weight gain is between five and ten pounds at this point.
Four Months
Have you felt any fluttering in your uterus? You may be feeling your baby move any time now if you haven't already!