I stupidly had unprotected drunken sex, three days later I notice a red area on my penis, next day I felt intense burning in my butt, penis and inner thighs. A number of tiny bumps appeared within the red area, but never became blisters, three months later they remain unchanged. I continue to have nearly constant burning symptoms in the tip of penis and anus mainly, for three months, and U am experiencing nerve pain in both legs down to my toes. At the start of this I did have flulike symptoms, I tested negative for all stds at three weeks, could this be herpes?