Anti-C and anti-c are both antibodies in the Rh system in the blood. If your mom has never been transfused, then she was exposed to the C or c antigen in a previous pregnancy, and her body made the antibody as a protective mechanism. Both have the potential to cause HDN (hemolytic disease of the newborn) if the baby has the corresponding antigen (either C or c) on his/her red cells. It is true that in severe HDN, the usual treatment can be exchange transfusions in the newborn, but only your mom's OB will be able to evaluate the severity by performing more blood tests as the pregnancy progresses. She should follow up with her OB.

Thanks for your reply! I'm happy to announce that the OB called today and informed us that the lab technician read the computer print-out wrong, and that everything is fine with Mom and baby!

Hello and I know this is a stressful time for you. Esspecially since the doctors don't seem to be telling you much. My first recomedation is that you go to a doctor who has dealt with this sort of issue a lot. It is important for you and the health of your baby. The ob will need to monitor you and the baby several times a week throughout your pregnancy and you want a doctor who knows what they are doing and what to look for. With that being said I had the same issue my last preganacy. I know the doctors can freak you out. But just because thier is a blood incompatibility doesn't mean there will be issue it just means there can be issues. Little c antibodies is what I have. Something happened where in my third pregnancy mine and my daughters bloods mixed. Now since my husband can only give our children c blood I had to be monitored. As the lady said before it is similar to the RH factor. It is just a diffrent protien that can be found on the blood that is the issue. When you have anitbodies your body sees the fetus and fights it like you were allergic to it almost. By fighting it I mean breaking down the babies red blood cells. What they did with me was I had to go in once a week for a while and then once i hit week 24 it was three times a week. They do an unltrasound on you every time to measure the babies organs and do a fetal movement count. Then towards the end they will give you non stress tests to make sure things are okay there too. What they are making sure of is that the baby isn't showing signs of hydrops. I ended up having a amnio at week 35 to see if the babies lungs were developed and they were so they induced me and went ahead and delivered my son. This was because once you hit week 35 the ultra sound isn't as accurate and they didn't feel the need to leave the baby in a "hostile" inviroment any longer than need be. When he was born he was very jaundice which is a cause of the blood incompatibility. When your body breaks down their red blood cells it causes a high billy rueben level because their liver can't break down the waste fast enough. It was a ruff first few weeks after he was born but he is healthy and happy now and a year old. Remember just because they say bad things can happen doesn't mean they will. The doctors should monitor you closely to make sure at the first signs of complications they catch it and can act. I will say though that my doctor told me that with each child after the risks of complication and injury to the child is greater, also the older you get before becoming pregnant again plays a factor. I hope this has helped.