moderate to severe back pain and nerve pain in my back after going through chemotherapy and radiatio

I  began having pain in my mid back radiating down my left leg.  At times i have severe pain across my shoulder blades.  At times i feel  a crawling  pain going up my spine radiating over shoulder blades.  I have had x rays,  cat scans and mri's only to be told me i have  2 slightly bulging disc.  Any help would be appreciated j.