Genetic and chromosomal conditions Genes and chromosomes can sometimes change, causing serious health conditions and birth defects for your baby. Learn about these changes and testing for them.
Placenta previa Placenta previa is when your placenta lays lows in the uterus. Learn about placentia previa's causes and treatment.
Smoking during pregnancy Smoking during pregnancy can cause problems like premature birth and birth defects. If you need help to quit smoking, tell your health care provider.