So I've been with the same girl for almost a year and we've been having sex for a while, Saturday night we had unprotected sex. A day or two later I notice that my tip of my dick is somewhat itchy.. which is very odd. Today is Wednesday night (4 days later) and no other symptoms, just itchy tip of penis where urethra is and thats it. No cloudy discharges, no blood in semen, I wouldn't even describe it as a burning sensation when I pee and sometimes it doesn't even itch for long periods of time during the day but will come back around at some point. I'm not sure if it's an STD or what but would like to know some opinions.