I had unprotected sex with my girlfriend about 1 month 1/2 weeks ago and it seems since then I have this strange feeling in my urethra and tescicles, perhaps behind them, and sometimes seems like below the head of the penis, inside, not on the skin, inside, I don t really know as its not any pain or something, its just a strange feeling, that persists in there, and I ve noticed the more we have sexual relations the more sensitive I am, with that I mean that I ejaculate much faster, for example today I couldn t last 3 minutes, when I normally last 20 mins at ease so I am really worried if this has something to do with it, its the only symptons I got, no burn no anything, peeing normally etc, just this..