What blood type rejects pregnancy?
When a woman is Rh negative and her fetus is Rh positive, it is called Rh incompatibility. Why is Rh incompatibility a problem? When the blood of an Rh-positive fetus gets into the bloodstream of an Rh-negative woman, her body will recognize that the Rh-positive blood is not hers.
When a woman is Rh negative and her fetus is Rh positive, it is called Rh incompatibility. Why is Rh incompatibility a problem? When the blood of an Rh-positive fetus gets into the bloodstream of an Rh-negative woman, her body will recognize that the Rh-positive blood is not hers.