Dear patient If you are having back pain for many months it may be due to 1. Disc prolapse 2. Instability 3. Minor fracture. So you need to be investigated and not to be taken casually. I would advise Xray of lumbosacral spine anteroposterior and lateral views to rule out bony abnormalities. Also mri of lumbosacral spine is required as it gives detail information about disc and nerves. Both are helpful in confirming diagnosis and planning further treatment. Meanwhile start tab diclofenac plus thiocolchicoside combination twice a day for pain relief. Take tab ultracet one at bed time. Wear lumbar support . Visit expert spine surgeon with report. All the best.