Xrays show degenerative disease (arthritis) of the lumbar spine and sacroiliac. Worse on the right side than the left. (I think everyone my age has it. Maybe I'm wrong....) Our dad had a really bad case of it.
So I'll need to ask the doc if that could have caused the pain that came on so suddenly, or if there is something in addition. I'll ask him on Tuesday when I get back from Chicago. In the meantime I'll just take it easy and let the anti-inflammatory stuff try to work.
That's it for now.