hi, i have an little problem. i feel burning in my penile Vain every time. i don't have see any blood, pus, yellow, green or bloody urine and any sore, bumps and blitz on my penis, it's physically seems okay but i feel burning all the time. i wanna tell you that i did an mistake two weeks ago, i fucked my gf but afterward i got know that she was on periods. please help me what i need to do ?