I recently had a gay encounter with a person. First he tried to give me a Bj but I didn't get an arousal, then he anal fingered me and after that I did the same to him. I made sure that both of our figures had no cuts, bruises and sores. I did a brief Oral on him but not ejaculation. afterwards he musterbated separately without any of my contact. after that I washed my self...Am i at the risk of HIV?