D-Antibodies? HELP

Jo`Alyn
What does this mean? I have A-Negitive blood type, so I have to get the rhogam shot at 28 weeks. I'm 10 weeks now, and they just told me they detected a D-Antibodies in my blood and usually it's when you get the rhogam shot which I have not yet gotten.. So why is it detected?? Anyone else have something like this happen.I just found out I have celiac disease 😦 if I could just have one thing go normal this pregnancy that would be great lol. Please someone explain, they did a terrible job.. They're not worried about it but said they are going to monitor it closely through out my pregnancy.