I performed oral sex on an escort yesterday. I was kissing her upper vagina, no licking or nothing. But my cause of worry is that, I have minor cuts on my lower lip because of the cold weather and I also learnt that she was about to get her periods that day. It was closed mouth kiss on her vagina. I know HIV is inactive when exposed to air, but since I was kissing what if blood or vaginal fluid from her vagina goes directly into my cut without being exposed to air. Am I at a risk for HIV? Do I need PEP? PLEASE ADVISE.