Hello, I m a 28 year old female nurse, I work 50 hours a week, I have a toddler and I m active on the family farm. I m 20 pounds overweight, non smoker. In the evening I have a grinding sensation in my lower lumvar region - it really feelw like soft tissue and bone rolling over and against each other. No history of falls, fractures or other back injuries. I don t do a lot of lifting at work and I wear high quality shoes. I have periodic sciatica that resolves in a few days with NSAIDS, ice and stretching. No imaging or other diagnostics. Nights are miserable. Ideas?