There are things that can be done to help keep your baby safe during your pregnancy if you are Rh negative and your baby is Rh positive. Hernandez-Rey: вЂњThe only danger is not knowing the motherвЂ™s blood type during pregnancy.вЂќ

вЂњHowever, the antibodies that can be created by the immune system because of a personвЂ™s blood type is what ultimately becomes dangerous for the pregnancy,вЂќ reports Dr. ItвЂ™s important to note that the blood types themselves are not dangerous for pregnancy. In turn, the Kell antibodies could attack a baby during the pregnancy since they donвЂ™t recognize the babyвЂ™s normal blood type. (In addition to Rh, another dangerous blood type is Kell, which can occur when a mother has had a blood transfusion in the past.) вЂњThe blood that was transfused would have the Kell type and then the woman's bloodstream will develop antibodies Kell antibodies,вЂќ says Dr. вЂњIt can be very dangerous for your baby, and may cause problems such as prematurity, growth restrictions, and in severe cases, stillbirth,вЂќ says Dr. вЂњThe mother's blood develops anti-Rh antibodies, and the next time that woman gets pregnant, her bloodstream will attack the second baby during the pregnancy if that baby also has Rh positive blood type.вЂќ вЂњDuring the pregnancy, things can happen and the baby's blood might mix with the mother's blood during that first pregnancy,вЂќ Dr. If youвЂ™re Rh negative and youвЂ™re carrying an Rh positive baby, there can be problems, the Mayo Clinic reported. вЂњWithout the antigen, you are Rh negative.вЂќД«eing Rh positive (which is the most common blood type, as per Carter BloodCare) or Rh negative typically isnвЂ™t a big deal - that is, until you become pregnant. Armando Hernandez-Rey, a reproductive endocrinologist.

вЂњIf your blood has the RH antigen, then you are Rh positive,вЂќ explains Dr.

YouвЂ™ll also be tested for your Rh factor, which is a protein thatвЂ™s found on the surface of red blood cells. But it might surprise you that there are blood types that can be dangerous for pregnancy, particularly if you and your baby are opposites.Дuring your first prenatal visit, your blood will be tested for a variety of things, like your blood type, anemia, syphilis, rubella, and Hepatitis B, reported Parents. One of those tests that youвЂ™ll be taking is to determine what blood type you are, which might not seem like a big deal, especially if you already know that youвЂ™re O-positive, for example. Your first prenatal appointment can be a whirlwind of excitement, nerves - and a lot of tests, too.

A negative blood type pregnancy