Hi, I Just Had Protected Sex With Someone Who I

hi, i just had protected sex with someone who i believe has some type of HIV/STD
it wasnt until after i felt a scar near the head of his penis, he was extremely sensitive, i also noticed bloody spots on his sheets. Thank God i used protection! he tried to take it off and continue sex and i told him no he flipped out of me and pretty much it was over. im still curious though, am i still vulerable? I didnt have any oral sex with him, however he did kiss me and i didnt see any sores in or around his mouth.