HI Annie:
Tell your Doctor to take you the HECK off Nystatin and put you on Diflucan (at least 100 mg). Nystatin is KNOWN to depress your own immune system and eventually the fungus become *super fungus* with nystatin. 99% of the doctors found this out a decade ago. Diflucan is much faster and more effective with MUCH less die off.
If you happen to be taking a birth control pill (as you made mention with the psyllium) STOP. Estrogen and estrogen like hormones lead to fungal infections and will keep you from getting better.
If you possibly can....ingest psyllium WITHOUT any additives. I know it sounds like a pain in the butt because the *mixing* kind at the store (Metamucil or the like) has sugar in it, even when it says SUGAR FREE.
You can find pure psyllium husk at your natural health food store.
Yup, NO sugars for awhile and avoid most carbs too (unless they are 90 to 100% fiber). Avoid whole wheat bread with yeast - yeast free can be bought at health food store.
I use Splenda but I cannot tell you if it is safe, as it is made from sugar.
I also eat Pure DeLite belgium chocolate bars (allowed on Atkins) but again, I'm not sure I should be because the sweetener, maltitol is just a different sugar. I just realized the other day that my splenda fruity drinks are addicting and it is because of the citric and ascorbic acids in them (the fungus likes that). So, now I have to cut them out for awhile (was wondering why I wanted 4 or 5 of them in a day - shoot).
SUPPLEMENTS: Be careful with regular vitamin C - the acid feeds the fungus.
Be careful to get supplements that say YEAST FREE (usually you can find these at a health food store). B vitamins are especially suspect of the yeast - particularly brewers yeast in them.
Hope that Helps ya a little