Hi, I thought I had an allergic reaction a few weeks ago, but now it looks like ringworm, but there are also some flat red spots. I had oral sex with a girl a few months ago and tested for hiv and other stds a month ago, but they were negative. Other info: athletes foot over a month ago from exercise at the gym, my dog has fleas that also have bitten me recently. Do you have any clue if it is a hiv rash or not. None of the pictures I see seem to match my condition.