I recently masterbated with a heterosexual guy from my college. We didn’t touch at all but he ejaculated in a tissue. I took my thumb and scooped up some of it and swallowed it. I don’t know if he was positive for any STDs. I know he has had some sex occasionally with his ex girlfriend. From what I read in the HIV forum there is little to no risk from receiving HIV but I specifically want to know about other STDs that i could be at risk for and how likely I could receive them from swallowing his semen alone. Please be as detailed as you can.