Congenital heart defects and critical CHDs Congenital heart defects are the most common types of birth defects. Learn about newborn screening for heart defects and how to prevent them.
Rh disease RH factor is a protein on some people's red blood cells. Learn how RH disease affects your baby and how to prevent it.
Prescription opioids during pregnancy Prescription opioids are painkillers that include codeine, morphine and oxycodone. Taking opioids during pregnancy can cause serious problems for your baby.