Is Surgery Necessary For Back Pain Due To A Fall?

Hi, I'm Gavin... i'm 24 yrs old, i had fallen from a tree about 7years back.... recently i have been getting these back pains and my doctor sent me for an MRI scan... the report says :- diffuse disc bulge of L5-S1 intervertebral disc indenting thecal sac and traversing S1 nerve roots on both sides.L4-5 intervertebral disc shows diffuse posterior buldge indenting thecal sac.Facet Joint arthropathy is seen at L5-S1 facet joints. My doctor says i need to undergo a surgery using an electric knife... but is there need for surgery? he also says traction using the weights has failed. My friends and relatives say i should not go for a surgery, it may even cause paralysis...