I was in the bar and drank a lot and went to the bathroom and after I felt a man sticking me from behind and starting to rubbing his dick into my anus he was wearing his underwear and I'm too I'm underwear on I never tried anal sex before to know if he penetrated me or not? If he penetrated me, I would know ? if this was an exposure of hiv or not ? Sorry from my english I'm not native speaker speaker