Yep, birth control doesn't mean anything. Always wear a condom, unless you get a vasectomy. Even then you don't need to raw dog it unless you see test results beforehand. I know it sucks and feels like you're wearing an afghan on your dick but you have to do it.
Well yeah technically you're supposed to wear a condom for oral, but LOL fuck that shit. I'd rather jack off than do that, it would feel a lot better.
I generally don't hook up with girls, so I get a pretty good idea of how clean she is before I put my dick in her mouth. You can always get syphilis if they're in stage 2 and not showing symptoms, but it's unlikely. Getting the herp is the biggest problem with raw oral.