So I broke myself today.
I twisted my knee during a dance number halfway through the first act. But I still hauled my butt up the stairs at the end of the number, and apparently I faked my way through the second act well enough that almost no one noticed! Hooray for years of dancing through the pain!
But I'll be okay. I've got painkillers, Tensor bandages, ice, and (if necessary) crutches, plus a day to relax before I have to go back to work (and it's the kind of week that I can hobble around on crutches if need be).
So I'll be fine. Don't panic about Facebook statuses and comments. Really!
P.S. Thanks to those of you who've helped me out with the cushy chairs and footrests!