Later: Actually, I stayed up very late, and had insomnia when I tried to go to bed. I made it to my appointment with the usual Dr. L. that I see. I had suggested to Mom that she go with me so we could shop in that area afterwards, and that made me a little late, but he still took me.
Mom and I ended up going to our usual grocery store after all, and doing a big shopping trip.
I had much less pain in my back today than I had had in some time.