Don't really believe in too many of the Candida diets, but I would highly recommend virgin coconut oil as someone else suggested. Also, have you tried probiotics? Those are good to take to try and get the amount of beneficial bacteria in your body up so they will crowd out any Candida.
Also, just wondering, you said your doctor prescribed you Fluconazole. I take that to mean you were actually clinically diagnosed with Candida? Could you provide more info like how you were diagnosed, how many mg of Fluconazole did you take, did your doc do any follow up tests after treatment to check your Candida level?