O-/a+, scared of another mc.

So I called my doc as you know. I didn't go to appointment last week Bc of family emergency. My pipes busted and no one could help my so, and the doc also wants both us there. But I couldn't get in till 28th. Wish I would have went Bc he's afraid the cause of my mcs have been that my body has developed antibodies ago the rh factor Bc I have had many mc, and I'm o- and so a+. And me being o- and so having dominant a+ my body has caused anemia, killing the baby. I'm so scared Bc if I'm pg, then by then my body will already be attacking the baby and I haven't had a chance to get the rhogan shot. I'm so scared its gonna be too late. I haven't had the antibodies tests yet but he's sure of it cause of how many losses I have had. I'm supposed to get it the 28th, but I'm so scared it will be too late.  I want to have my rainbow baby as bad as the next mommy, but not if its just gonna disappear in a week. I hope that if it does happen again, that I don't know that I'm pg. I just don't think I can take another loss. Even if I was/am 3/4 weeks. Guys don't understand how we feel. Once we see that pink line we plan out everything. Nursery, hospitals, clothes, toys, diapers, socks, car seats, strollers, birth plans, collage funds, names and the whole 9 yards. Guys... They don't understand until they see the baby on the monitor or when it pops out. I have never been so scared of a pregnancy in my entire life, when all I want is a baby. And  at the same time sooo dang excited and joyful.im so stupid!!! I don't even know I'm pregnant yet. And I'm freaken out. just need assured that it will be ok. Anyone have this issue? It won't matter if it's your first Bc you won't have the antibodies untill your blood and babys blood mixes by birth or loss. But any help, advice, experience, fam/friend experience. Anything to help me calm down about this and give me a bit of hope and advice on how to handle this. Is their anything you can take for the anemia? Idk if the antibodies attack anything else, but can taking iron help to not become anemic? Thanks for reading my long drawn out probably nonsense topic. And thanks for and advice