thanks for choosing health care majic.See persistent
pain in back could be due to some disc problem or postural issues.As you said i think any thing major is ruled out as you already had seen a doctor for same,apart from this still if you are having pain you need to strengthen your back muscles.If you are over
weight pl.reduce your weight.You need to see a physiotherapist who will in consultation with your doctor teach you a set of exercise that will make your back muscles stronger and help you get rid of pain.take
diet rich in
calcium.