It's been improving since then, and is up to dog-walking and getting back and forth to work, but it's still being a bit sore after these totally-standard activities sometimes, so it's not all the way better yet. The getting sore quickly meant that I didn't get to climb much on Wednesday, grumble grumble.
Earlier Wednesday I got a vaccination (Tdap -- tetanus, diptheria, and pertussis; I'd been meaning to for quite some time, but kept forgetting, so I was glad the doctor suggested it while I was there). It felt fine at the time, but the next day my arm was crazy sore. It's still quite tender now. Ibuprofen is being useful, as is warning anyone who comes within about three feet not to touch it. (This is the trouble with invisible injuries -- people forget not to poke them.)
I don't like it when my bits don't work. I need my bits to work if I'm going to go out and do productive active things. If I can't do productive active things, I get cranky.