I've lost 10 pounds (yet my gut is still apparently swollen, at least to my eyes). It does seem that what happened is that the triple sequence of antibiotics, one after the other, plus prednisone (two sequences) killed off my gut flora and wonked my immune system to the point that it's now having to slowly rebuild.
I have reluctantly decided not to go into work again today in order to have enough strength to make sure I can do the whole rest of the week. I HATE doing this -- I have no sick time remaining (given that I only get about 2 sick days a year that's not saying much, but what it means is that I've eaten up a large chunk of my vacation time) and we have stuff that's supposed to be getting DONE at work, but I have to be reasonable and acknowledge that if I go into work today there's probably a 50% chance that (A) I'll have to leave early anyway, and (B) will find myself feeling WORSE tomorrow because I didn't give myself that one more day to go from "barely functioning" to "passable". I can survive on "passable".