Thank you for all your notes of concern.
Group Health gave me antibiotics; within 6 hours of the first (double) dose, I felt like myself again, and I continue to improve. The goal is to get myself to the presentation tomorrow afternoon.
I have only the vaguest memory of what I've been doing between March 9 and yesterday. I hope I didn't offend anyone, do anything embarrassing, or give anyone else bronchitis.
I do, however, seem to have committed to a really scary amount of activity through the end of June.