Thanks for these fine answers. I'm tossing them all into my think-about-it pile.
It seems I could be much worse off. Perhaps I am expecting too much too soon. I am riding, and I am playing tennis. So there's that. But it sure feels weird, like someone is touching my shoulder when I move. I could live with that if it didn't hurt at night, which is weird because that's when it hurts the most.
Thank goodness for ibuprofen. Or as I think of it, vitamin "I"