Leg and back pain. Weak day by day!

Sir this is second time I'm posting but expressing in full detail.last yeaar October I suffered with severe backpain my MRI shown diss bulge L1- L5 thecal sac compression. I consulted neurosurgeon in Hyderabad Kim's hospital. He did bone scan and x Ray and bone density . All the tests are normal but in x Ray early stage of ostrephytes.he prescribed inflajoint calcium and vitamin D3 and migretaplus for 3 months. At that time I suffered with back leg and headache.after the course from oct 15 to Jan 15.i felt extremely relief and I'm so happy with my doctor.but on March 15 I did journey continuously for 4 days.my left leg is pain at calf muscle at night I thought it Will go away.but it has extended to knee after that recently my back pain started.im unable to sleep even on bed with my back. Pain is extreme at night so that I can't sleep at all.previously I got back pain after that knee pain.but now calf to knee to back. Left leg only becoming weak day by day