I hope you don't have to wait too long. It's good to know other people have the same feelings about things. My son needed ibuprofen last night but was ok this morning (I didn't ask how his back was, I guess that is avoidance right there, but he didn't mention it). Then I thought that as he seems to experience it more in the evening after he's used his back all day, that suggests a muscular cause. I've tried to distract myself by trying to find a local therapist who offers CBT.