I have lower back pain since October 2017 after lifting heavy weight. I have got mri report of my spine which says that" mild broad based posterior forminal disc bulge seen at L4/5 and L5/s1 level causing thecal sac indentation and subtle compression on bilateral exiting nerve root with no significant central canal or neural foramina stenosis. I have got blood test report of calcium ,tsh, uric acid, vit d3, vit b12, ESR,HB, all are normal. I have also got hla b27 and ra factor test both are negative. Please suggest me best treatment.