Zika virus and pregnancy Zika infection during pregnancy can cause a birth defect called microcephaly and other brain problems. Learn how to protect yourself from Zika.
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.
Polyhydramnios Polyhydramnios is when you have too much amniotic fluid. Learn how polyhdramnios is diagnosed and treated.