Your rash doesn't sound like herpes; I suspect you are right about a fungal infection. However, 25% of sexually active persons in their 20s or 30s have genital herpes and don't know it. Given your exposure 18 months ago, it seems reasonable that you be tested, and it sounds like you have a GP who knows how to do it. Just make sure s/he uses a truly type-specific test for HSV-2, such as the HerpeSelect test. (See many other threads about the proper blood tests and problems with the improper ones.)
Good luck-- HHH, MD
Sorry doc me again. I don't know if i've got this right or if i'm overeacting but i read that people who have contracted hiv/aids often get jock itch or ringworm. I have never had jock itch or ringworm before and i'm terrified it is a symptom of HIV. When i visit my GP i want a test for HIV/AIDS.
Fungal skin infections indeed are more common in HIV infected persons than in the general population. But they are so common in everybody that having one really doesn't imply a likelihood of HIV. Don't worry about it.
HHH, MD