I don't know how to describe this stuff here. "Exhaustion" doesn't just mean I'm tired. It means it's hard for me to even move - and sometimes that's just from going out to dinner, or from taking 1/3 of my usual walk. "Nauseous" means having to be careful not to move any more than strictly necessary. "Balance issues" means having a hand on the wall at all times.
These are examples. There's more, but I'm too exhausted to type it. See?
I can handle it when it's just a day or two amidst a few days of functionality. But this is a little over a week now. Uncool.