Fungal Infection Treatment: Folk Medicine

Fungal Skin Infection:

I have had a horrible rash in the fold of my skin in my belly for months now.Intially I had it under my breasts too. I went to a dermatologist, who gave me diflucan and ketoconazole. After several months it did go away. Then it came back, but just on my belly fat and around my perineal area. I don't have insurance so I tried many "natural" cures. But nothing is working. My skin is raw, if there is any help anybody can give, I would greatly appreciate it.