I am sure you have heard from your Doctor’s about healthy habits and lifestyle during pregnancy. Proper nutrition, adequate exercise, daily vitamins etc. I feel - Meditation also needs to be added to this list of good habits during pregnancy.
The brain is changing more rapidly when the baby is developing inside the mother's womb. It is an active time for the fetus to grow and explore, and of course, connect to its mother. And new evidence from in-utero fetal brain scans shows, for the first time, that this connection directly affects brain development: A mother's stress during pregnancy changes neural connectivity in the brain of her unborn child.