I had sex with a china prostitute that costed me 100 bucks in singapore. Had sexual intercourse and oral sex with her. But the problem was, i had a mouth ulcer which is very closer to my lips and i actually went to do oral sex on her very violently. After the sexual intercourse, i realised that my ulcer bleed and there was a bit of blood in my mouth. What are the chances of me getting HIV and STD from such china prostitutes in singapore. HELP pls. I am very troubled.