Quoting Monique and Dominic's mom:" I am A-, got that from my mom. DD is O+ and DS is A+ , which means DH is + something. We don't know his blood type."
Quoting P3RvYmCp3rv:" so you would have to be AO and DH would have to be _O in order to get an O child. "Hm, DH could have AO genes, making him an A+ but still have an O+ daughter.
Quoting MommyCaroline:" My dad is O+, my mother is AB+.... I am Aneg. lol Not sure how that happened!!!! My brother is the same as my mother."