A baby at 37-38 weeks is considered full term. He or she could be born anytime. The baby is now ready for birth. The downy hair and vernix has just about disappeared, swallowed by the baby. This and other matter remains in the baby's bowels until the first bowel movement after birth called meconium.
Meconium is a tar like substance excreted by the baby after birth.
The baby has very little room to move around now. You will still feel movement, but not the active kicking and punching of earlier. If you have not yet delivered, firm up your plans. See Decisions to be made . Week 40 Do not worry if you have not yet delivered.