Dear Monzur, If the pain is localised or with/without radiation to some extent then this can be managed conservatively with Physiotherapy including some electrotherapy modalities , pelvic traction, manual therapy , corrective exercises along with some nerve vitamin tablets..... One assistive devise such as lumbo sacral brace will be mor useful in this case. Once pain is reduced you can join core strengthening classes only under a supervision of a certified physiotherapist who can design exercises specifically for you as per your condition..... If there is persisting weakness in your legs, increasing gradually and showing sluggish reflexes (Deep tendon reflexes) then this represents motor weakness and you need to be ready for a surgical procedure....Although this surgery is a risky and expensive one these days latest technologies in an operation theater (OT) have already introduced to reduce the risk factors..... So wish you a good health soon.....