The rehab program may be your saviour. I'm not trying to to be evangelical but, in the overwhelming majority of cases, exercise helps with this sort of pain. The process of moving the bits that are currently screwing you to the couch is not very appealing, but if you get the chance, please give it a go. Yes, you may need to take an extra pill to either get yourself through, or over, some sort of workout, but increased activity works on our brains as well as our bodies.
I'm carrying a ridiculous amount of old injuries because I was a reckless idiot in my youth and I'm paying for that now, but moving saves my sanity. I figure if I'm already buggered, getting off my arse and doing something that makes me even more tired makes no difference, except that I've had some exercise. It does get better, but bloody hell it's a long road. I hope you get some relief.