Could Candida Albicans contribute to chronic fatigue and can it make me have a 2000 ng/mL opiate blood result?

I suffer from chronic fatigue syndrome, also from mood disorders and from cognitive decline. I learned about gluten, dairy/casein, mercury and their role on the mentioned problems (among other things). I learned how gluten and casein damage the gut and how candida overgrowth on the intestines "defecate" opium or a opium-like substance. Can this opium generated by candida be causing all the havoc in my life?.