--which is not very high, by the way--one wonders what it was before you started "taking care of it" (which I assume means you are supplementing).

Gluten Sensitivity/celiac can certainly result in malabsorption of many nutrients (not just B-vitamins), and that may help to explain some of the fatigue, and it is possible to get central nervous system "plaquing" from B12 deficiency that superficially resembles that of CNS autoimmune diseases like MS.

Can you tell us, in more detail, what tests you're had, and what the results were?