the blood type plays into the RH factor, if you are a neg mom and you pick a pos donor or DH is pos then you body can see the pos as a virus or bug and attack it. That is why you have to have a rhogram shot if you are a neg mom with a possible pos baby. The common rule is too that baby will take dads blood type too.

I had 3 bleeding episodes with this pregnancy and was admitted twice and every time I got a shot

__________________