Lyn,
Sorry about your fatigue issues. A MULTIVITAMIN, wow, what an answer. My fatigue comes and goes too. On 3 or 4 days , off for a few, not nearly as bad as you are having. Not sure about any new lesions as my MRI is coming up in a month or so.
I know it is hard to find a good Neurologist, but perhaps a physical from your PCP, with some tests, might point at something. You will always know, you are going to have bad days and good days, but something else could be pushing you over the edge.
Deb