Try exercise before you go to bed. I too was suffering from this and found that giving my muscles some work before bed fixed my problem. As part of my PT instructed home exercise program (HEP) I stretch upon waking and before bed and I no longer have these issues. I had surgery in 1990 L5-S1 fusion with laminectomy and now with OA, lumbar stenosis, peripheral neuropathy. Once you get a HEP keep on doing it cause your back will need it.