Have you done a parasite cleanse? A one month long parasite cleanse is inexpensive and may greatly improve the way you feel.
A typical parasite cleanse involves taking 3 herbs(wormwood, black walnut green hull extract, and cloves, plus perhaps some other herbs) for a month. Many here have seen evidence of parasites while doing a cleanse, while others just felt better after doing a cleanse. The 3 herbs I mentioned are also very antifungal. Wormwood is one of the best remedies for fighting candida. Wormwood need to be taken at a relatively low dosage and for no more than a month at a time, as too much can be toxic. I am in the middle of doing a parasite cleanse with Kroeger Wormwood Combination. It takes two bottles to do a one month cleanse. It is only around $5.50 a bottle for it on the net. Another parasite cleanse that is popular is Humaworm, available directly from Humaworm.com. I think that is $30 for a one month supply.

Some supplements that might help are magnesium malate, licorice root, cayenne pepper, garlic, turmeric, and horseradish. of course you should also take plenty of vitamin c, b vitamins, enough vitamin a, vitamin D, and calcium.