First...I wish you all the best. I understand "mystery" illnesses far too well. I may not have a lot to add, but many of your symptoms were similar to those that I first experienced a few years ago. After months of tests, someone finally checked my B12 level and my ANA count. Eventually, I was diagnosed with Pernicious Anemia...an autoimmune condition caused by the body's inability to absorb vitamin B. Many (if not all of your symptoms) can be caused by this disease.

Again, you may very well have already been checked for this...but you have my best wishes for a diagnosis and speedy recovery

Matt