I am a fellow suffer. At the moment I am fine. First thing is to go to your doctor and see if it is Muscular or Neurological. A MRI scan will tell the tale. Mine showed SL3 4 and 5 were out sitting against the nerve. The pain is hard to put into words. By the time I got to see a specialist he felt an operation would not help as the damage to the nerves was done. I am on Morphine patches daily and every three months get an injection in the spine, this works for me.
So get to the doctor first.