hello, i have been worried sick this past week and i want to know whether I've put myself at risk, if i should worry or not, here is what happened: last week i was visiting this gay sauna and this guy and me started playing around rubbing our penises together with no condom (i am circumcised but he wasn't, i don't know if that makes a difference)then after that i laid on a bed and he got on top of me and started to "hump me" (during this whole time we were both completely naked and when he was humping me, his penis was in my groin area, where my penis would be) 3 minutes into the whole thing i ejaculated but he didn't and when i got up, there was still some semen on the tip of my urethra which i cleaned immediately with a towel after i got up, my two main concerns are this: 1)could i have been at risk when we rubbed our penises together?? 2) after i ejaculated and if somehow my urethra touched the tip of his urethra or if both our urethras were touching when he was "humping me" could i have been at risk of getting HIV like that?? should i test??? it would give me some great peace of mind if u answered and explained things, thanks