I have a pain. A very small area of pain, two or three inches to the right of my spine, and about half-way up my ribcage. The way the pain varies as I move suggests that it's a torn muscle, but I can't imagine how I've managed to damage a muscle in such a small and specific area when it's surrounded by so much other structure.
I don't recall any occasion recently when I lifted anything unwise, or moved suddenly in an ill-advised manner. It's not tender to the touch, and doesn't feel any different to the same area on the opposite side. There's no visible discolouration. The pain first presented itself when I awoke this morning.
It's not disabling and it's not distressing, it's just... odd. All the other usual pains -- knees, shoulder, etc etc, are behaving "normally". I think I'll just ignore it and assume it'll get better by itself in a day or two.