I hooked up with a transexual prostitue and the codom slipped off while I was topping and I was wondering what my chances (if the TS is indeed HIV positive) of contracting HIV from that small amount of exposure. Not sure when the condom slipped off, but it would've only been for a max of a few minutes. I didn't ejaculate inside and I don't have any open wounds on my penis and there was no visible blood.