Sir, i have back left lumber spin pain since 2 months. unable to stand/sit more than 3 hours. no pain while sleeping. mri scan report is" bulging disc with broad central left paracentral protrusion at l5-s1 level narrowing spinal canal, left lateral recess, indending the the cal sac, bilateral moderate inferior neural foraminal compromise & slightly indenting the traversing nerve roots on lest side. is it must to go for surgery, can it recovered with physiotherapy?