Oo possible talaga! Type B ka from your dad (who's O) and your mom (AB), kaya pwede kang maging B, walang problema doon. Your baby being Type B with you (B) and your hubby (AB) is totally normal din, kasi your hubby can pass B allele pa, so yung combo ay gumagana talaga. Blood type genetics can be tricky to trace pero based sa inyong family setup, lahat checks out naman, a few of us sa mom group had the same realization when we checked our kids' blood types and natalo kami sa genetics haha!