i’ve been had it for 2 months. it happened 2 weeks after high risk sex with hooker but with protected sex. I have ulcer in mouth but we had deep kissing each other. I tested for hiv 1 month after the exposure and it came out non reactive. This rash is slightly itchy and come with other symptomps like nausea, headache , and chronic watery stool (until now). i dont allergies history, and eat well. please someone help me what rash is this and how to get red of it, it makes me paranoia!