have been recently tested negative for HIV twice ...recently i devloped what looks like red spots on my skin ...they arent raised but they are red blotches ....I have them on my chest neck and arms and I have them in the back of my legs ..i recently had a UTI which the doctor put me on antibiotics called bactrim ....i recently finished my antibiotics could it be from the antibiotics that I broke out in these red painless looking blotches .....its impossible for me to be now HIV poz as i got tested twice .and I got restested for STD's and came back negative ..So I dont know what is going on and I dont want to panic anymore if there is a doctor on these boards can you please tell em what is going on with me so i can finally have a clear mind and head ...PLEASE HELP