Birth defects can cause problems in overall health, how the body develops or how the body works. Babies with birth defects may need special medical care.
Low birthweight is when a baby is born weighing less than 5 pounds, 8 ounces. Learn about the causes, risks and health-related effects of low birthweight.
Having sex during pregnancy is generally safe for most women. Learn how pregnancy affects your sex life, and when to talk to your health care provider.