Sal I am so sorry to hear this
I am lucky that I can now manage my back/hip stuff with hot pack and a muscle relaxant, but I also used a TENS machine which I found really helpful too.
I had chronic head pain after my brain surgery and it was awful - luckily it eased after six months or so. I hope this is only temporary for you - there is nothing worse, and no feeling to make you feel more hopeless or helpless.
Love and hugs