I lost exactly the same thing you lost. It comes with being ill. Its just how life is whens your unfortunate.
I got my nystatin from a infectious disease doctor. You should try one those... They are waay more lenient than general practitioners. Now getting diflucan is another story. Diflucan is harder on the liver than nystatin and it really doesn't get rid of candida.
The only thing I see you haven't tried is a methylation protocol . You should look into boosting your immune system through methylation, more colostrum/vitamin d, and lots of buffered ascorbate powered(2-4 grams a dose). High levels of ascorbate also will fix the adrenals.
Now anything after that would be straight up chelation work with dmps,edta and dmsa to knock down biofilms and remove heavy metals.