After being up a few hours today, and still in as much pain as I have been, barely able to walk, I suddenly got very tired and could not stay awake. Fell asleep on the couch and slept about four hours. When I woke up, pain much less. I can walk without even using the cane now. What changed? I have no idea. I’m happy to have less pain and be pretty mobile, but still it’s puzzling how this illness works.