R IS FOR RHESUS NEGATIVE BLOOD TYPE
During your pregnancy, you will find out if you are either rhesus positive or negative. If you are Rh negative and your partner is Rh positive, some extra precautions may be taken after birth. Those who are Rh positive have a substance known as D antigen on the surface of their red blood cells. Rh negative people do not. This isn't usually a concern for a first pregnancy, but it may mean some extra care is needed to avoid problems if you get pregnant again.” You will be offered an ‘anti-d’ injection, a solution that will ‘mop up’ Rh positive blood cells.