If you are worried go to the dr and ask for the antibody test. This will put your mind at ease and if it happens that there are antibodies present you will be able to talk to your dr about it. I had mine tested a few months ago because I am O- and my son is A+. Now we are expecting our second bub and I must say I feel better that I had the test. I don't know if I helped at all but go and get tested if you are worried. It's just a blood test -doesn't take long and will give you peace of mind.