I last had sex with my girl while she had her panties on, and period. when we was done, i realized I had a scab, like a rug burn. Two days later my scrotum, penis, and anus was burning like crazy, with a slight itch also redness is present on scrotum and whole penis...A couple days later I realize i have tiny bumps on the head of penis. Then like a month later my whole body started having a burning sensation. I did 3 std test, 8 weeks, 4 months, and 6 months since i last had sex with my girl and haven't since results came out negative. my urologist said i should see a dermatologist...What can i have because I still have these symptoms, and it really burns.....