I think that Nystatin is a good idea. When my dr thought I was possibly having a yeast problem, he had me taking it every which way possible! I was on the sugar free, yeast free diet. I took pure Nystatin capsules (by pure, I mean no additives, dyes, etc...) orally, about 10 or 15 capsules a day. I bought a plain saline nasal spray, removed the applicator tip, emptied the capsules into the saline and replaced the applicator tip, therefore making a nasal spray. I believe I used about 4 capsules and kept it refridgerated. I hate to sound gross but I have to tell you that I also had to insert capsules rectally and vaginally. If you really do have some sort of fungus, this will attack it from every angle.