Compression fracture. To walk freely?

In Feb 17 I had fallen from chair due to which I had compression fracture in my L2spine, The CT and MRI report showed fracture,  soft tissue , straightness  and weaker spine . My reports of vitamin D are 13.26 and B12 is 154 which are below the desired level as per report. I had taken bed rest for 1.5 month with a strong dose of antibiotic  and pain killer but even today I m having a slight pain and at night when I sleep the pain increases , this pain goes as soon I mobilese in morning. My CT guided biopsy Reports are negative. Plz guide me as what to do, I was doing some exercise  to keep fitness  now  I m not able to perform my day to day exercise , activities and office work (My office work is a sitting job) due to which my body weight had increases by 8kgs Even I am not able to walk freely