Hello. I am 30 year old male who is about 6'1" and 185 pounds. I have what appears to be a small rash on the lower end of my penis shaft. It doesn't hurt or itch or anything? It's not raised or anything. A few days ago I had sex with a girl and before we did we dry humped through our clothes for a while, and then dry humped naked. She was rubbing her pussy on my cock and I could feel her pubic haris rubbing on my shaft. Could this cause a little rash? Should I be concerned? I got tested a few months ago and was clean of everything, but I'm afraid its herpes or something? Please help..