After being involved in a car crash on the outside lane of the M25 I had a very painful back for about 3 years. The car was written off and there were times I almost wished I had been too!
I thought it would ease on it's own (with anti-inflammatories/painkillers from my GP) but it didn't, so, having persevered for long enough, I started trying to find an alternative answer - osteopathy, physiotherapy, massage etc. In the end, the turning point came after having acupuncture (NHS acupuncturist)! I felt a difference after the 3rd session and eventually recovered completely and have not looked back. You could give it a try.