If you're suffering from morning sickness while pregnant, you may be concerned that your lack of appetite or ability to keep food down is affecting your baby's fetal development. You need not worry, says OB/GYN Shannon Clark, an associate professor of maternal-fetal medicine at the University of Texas Medical Branch at Galveston.
"Typical morning sickness usually resolves by the end of the first trimester, or, at the latest, 20 weeks of gestation," she explains. "With morning sickness, it is the mom who suffers, not the fetus. The fetus will get what it needs nutritionally from the reserves of the mother." If your morning sickness persists beyond 20 weeks into the second and third trimesters, consult your doctor, as the baby's growth may be affected. "In this case, ultrasounds for growth of the fetus should be done," Clark advises.