What blood type am I? Probably?

My mom was B negative, my dad is unknown because he's a deadbeat, and I guess I'm just curious because my mom just died and I don't have any sisters or brothers...I'm 27...and if anyone knows statistically what my chances are, I don't know anything about ABO dominance or genotypes, but if a bio major could help me out, what my blood type is most likely to be, that would be great. I know I can go to Red Cross but I hate needles and honestly, it's not really that important, I'm just curious. Thanks!