Back pain is one of the commonest issue for which the working population seek advise -mostly it is musculoskeletal and postural and is aggravated by prolonged sitting ,bending ,office work etc.Other factors need to be considered like age ,weight ,gender ,co morbidities like
sugar ,
thyroid and deficiencies like vit d ,
b12 and hb
If exercise help that usually indicates that it is more of stiffness -still it is recommended that you show a nearby ortho who will evaluate and maybe recommend blood tests and MRI if deeemed necessary .Can take a muscle relaxant tablet and apply gel if pain is severe