Having gone through a long road of pain due to a blown disk which caused extreme back pain and sciatic nerve issues I would highly recommend going to a back/spine doctor/surgeon to find out what is causing the pain to begin with. It wasn't until I got an MRI that the blown disk was obvious. Xrays alone did not diagnose it. I, to, went the chiropractor route, the pain meds route to no avail. Once I got the disk fixed it was like the sun came out and the skies parted and the clouds disappeared. Have never had pain problems after that.
Oh, the chiropractor took xrays to and was "adjusting" my back with a blown disk. I could have really belt dealt a blow had he jacked it up doing his quackery.