Good day..I noticed an itchy red round thing in my upper left thigh yesterday morning after brisk walking. Then in the afternoon I noticed it was peeling of and painful when touched. Later that afternoon I played badminton and sweat a lot. After the game I inspected it again. I saw three to four little red round spot peeling nerd the big one I noticed earlier. And just now I inspected it again...they are flat round thing now..however I noticed that their color (red) is turning darker...I had my last oral encounter on June 8, 2013. I was tested for herpes last June 27, negative..and was tested negative for syphilis last August 8 of this year. Could this be herpes?