Hey guys, I'm new here and I apologize in advance if this is in the wrong place. But anyway today I received a blowjob, and the head of my penis was EXTREMELY sensitive, to the point of where I had to stop because it actually began to hurt. About a half hour after the encounter I noticed 2 black spots on the head and just wanted your guys opinion. I'm pretty sure there isn't an STD that shows itself less than an hour after the encounter and the most likely culprit if probably a little bruising, but i just wanted to get everyone's opinion on things. Thanks for your help!!