can you relate the onset of your pain
to a certain activity or posture at work? the most common causes of backache at your age are either prolapsed intervertebral disc or lumbosacral strain. You must sleep on a firm mattress and use commode. Do hot fomentation and apply a local gel twice a day. And wear a ls belt. Take some pain killer for 1 week or so. And have physiotherapy
for 7-10 days. Once your pain is controlled. Learn and do exercises regularly. Take care.