My blood group is o negative and my hubby blood group is o psotive.My first child blood group is also o positive. There was No complications in my first pregnancy. But in my second pregnancy lots of complications came.there is rh negative pregnancy. I did not know abt this. In 28 weeks pregnancy I know that there is.blood mixing. In ultrasound reports Dr found fetal ascites,enlarge heart, small pericardial effusion and placentomegaly middle cerebral artery peak systolic velocity of 67cm 1.7 moms s/o moderate to severe fetal anemia with hydrops. So after this report Dr.gave blood transfusion (IUT) three times when baby was in my utrus. Dr delivered my baby in complete 36 weeks. Dr did phototherepy. Now she is fine. Now dr test baby' blood group. And it is o negtive . I wants to know that if my baby blood group is same like my blood group then why these problems came. I search on net there I find out that if in the second pregnancy fetal was rh positive then these complication came. But there was fetal blood group is o negative plz help me. Because my first child was o positive that's why I faced these problems in my second pregnancy.