Elanor, Congrats on the social security, sort of. I know I'd much rather be working.

Has anyone checked your B12 level? Don't assume the fatigue is only MG. I think a visit with your primary doctor is a very good idea. Maybe go over the meds and see if any of them are interacting to cause a problem. Hydration is so very important. Maybe your doc can check your urine and serum osmolality to see if you are properly hydrated.

http://www.rnceus.com/renal/renalosmo.html

I hope you will feel better soon.

Annie