One other thing: before getting the shot, have your DH's blood tested. We are both O-, so can only have a child with O- blood. (I'm not sure about all the possible combinations of parent/child blood types, but it would be worth asking your practitioner about.) We just signed a form stating that we declined the Rhogam because it was medically unnecessary. (My MW also agreed it was unnecessary, but had to file the paperwork for state law.) I also agree that the need for it prenatally is very very small, and you may be better off waiting to find out your baby's blood type before getting the shot.