Hallow Dear, First get Rh group of your husband done. If he is also Rh -ve, there is no necessity for you to get the injection as there is no risk of isoimmunisation. Usually, Rh negative person does not have the antibodies in the blood against Rh positive antigens by default. When the blood of such individuals comes in contact with the Rh positive cells, the body develops antibodies. Therefore, during first pregnancy, the baby has usually no risk. However, this baby if Rh positive, can be responsible for initiation of Rh antibody formation in mother s body. This usually happens during delivery or abortion. These antibodies in subsequent pregnancy may cause harm to the baby. Therefore, immediately after delivery, the injection is given which prevents the antibody formation in the mother s body. Now, since you had not taken such injection, you can find out whether such antibodies are formed in your body by performing a test called as Indirect Coomb s test on your blood. If there are no antibodies present in your blood, your next baby is spared of the mishap. However, after next delivery do not forget to take the injection. If the antibodies are formed in your blood, the effect of baby will depend upon the concentration of these antibodies. Accordingly baby may require blood transfusion either immediately after delivery or even during pregnancy lest the risk to the baby s life due jaundice as a result of blood cells destruction. I have tried to make these very complex things as simple as possible for you. You may contact me by asking me a Direct question after you get your blood tested for antibodies. Dr. Nishikant Shrotri