It's not a broken bone or a broken anything else dense enough to show up in an X-ray, either. Some kind of soft-tissue injury is likely.
Yesterday, the doctor shot me up, right in the shoulder, with a topical numbing agent and corticosteroid. Relief was a couple of hours in arriving but arrive it did, mostly. I had lunch, took a pain pill, did some chores that needed doing (the old drain hose didn't fit the new dehumidifier, thanks to the addlepated and non-standard E-Z grip molded nubs on the hose fitting -- they were awkward on the old dehumidifier and impossible on the new one. I was sure not going to be emptying that tank with a bum shoulder, despite it having a pretty good one-handed handle) and was asleep as soon as the cats had dinner.
This morning, the wonderful relief of yesterday is gone but my shoulder is still much improved. If it continues to get better, that'll be all. If it doesn't, I'll be having to see a specialist.
I'd like to say I made a start on getting caught up with Welcome To Night Vale, but Cecil lulled me to sleep twice in a row. I was drifting in and out, dream-narrative interwoven with the podcast, one as surrealistic as the other.
2 weeks ago