I posted this to another commenter with back pain, maybe it can help you:
Read this about APT: http://www.anteriorpelvictilthq.com/anterior-pelvic-tilt/, not saying you have it, but it's possible. I had back pain for a long time because I thought I was "standing up straight". Really I was arching my lower back really badly and it caused all the pain. Did the same thing when driving. Once I realized what it was, I was able to correct it and now the pain is not nearly as bad.
Hanging helped a little and so did the traction machine at the sports medicine doctor, aka Chiropractor. Things like that only helped until I got to the root of the problem.
I hope this helps in some way and your back gets better.
EDIT: Also, when you go to get something off the ground, go down to one knee instead of squatting down, that one was straight from the doctor and actually helped a lot.
Read this about APT: http://www.anteriorpelvictilthq.com/anterior-pelvic-tilt/, not saying you have it, but it's possible. I had back pain for a long time because I thought I was "standing up straight". Really I was arching my lower back really badly and it caused all the pain. Did the same thing when driving. Once I realized what it was, I was able to correct it and now the pain is not nearly as bad.
Hanging helped a little and so did the traction machine at the sports medicine doctor, aka Chiropractor. Things like that only helped until I got to the root of the problem.
I hope this helps in some way and your back gets better.
EDIT: Also, when you go to get something off the ground, go down to one knee instead of squatting down, that one was straight from the doctor and actually helped a lot.