I think it's really important to do as much research as you can about your suspected medical problem before you come on to a site like this. That would make it easier to sort out the helpful advice from the much less helpful.
I don't want to confuse you any further, but, as I've posted before on this site, I had chronic yeast problems which wouldn't go away just like you seem to have (I was much too thin at one point). I finally found out that it was mercury poisoning from my silver fillings. I replaced my fillings and began cleaning the mercury out. Now I feel much better. This may be your case too. I can't be sure since I don't even know if you have (or had) silver fillings.