The last few months most of the times after having sex with a condom or masterbating a few minutes after the head will become blotchy and red and sometimes little bumps will appear on the underside of the head and the tip but are always gone within a day sometimes two, it doesnt really bother me just the appearance of it, its especially worse if I have sex for a long period of time. I havent hada blood test but does anyone know waht this could be or a treatment, maybe if i dont have sex or masterbate for a few weeks it wont be as bad?