I had unprotected sex with a lady recently and after about three weeks, i had cough i went to a pharmacist who gave me some antibiotics and a cough syrup after taking these drugs the cough stopped but my legs and arms and sometimes my anus itches especially when I enter a cold area or room with airconditioner, this condition has continued for about four weeks now and i also feel dryness on my skin i'm beginning to think that i have HIV, some friends told me that I'm probably reacting to the drugs, but its been four weeks now that i stopped taking the drugs please help