Have you ever considered trying massage therapy? It may beable to help, since it sounds like it could be muscular and thats why nothing showed up on the x-ray. I am a massage therapist and have clients with some of the same problems, that I have helped tremendously. Make sure to ask therapist about schooling they've had in looking for a therapist. Ask questions such as What kind of schooling they've had, are they nationally certified? Best of luck to you.