Acute pain on upper back aftr ny workout

The problem: This has started since 2010 my upper back pains when i do any lifting.. pushing.. pulling.. sitting in a crooked position.. washing clothes.. cooking.. sleeping left or right side etc.. The start was due to falling during a slippery season.. when I fell on the left side of the body and any how i stopped my self from fully falling.. and it was just a disbalance where by i took the support of my left hand.. "in simple words i fell i braced i stood.." But after some time my back starts paining and till today it pains.. i have seen neuro, general physician, ortho.. but the pain is permanent.. also done an MRI.. and nothing was found.. Only if i do nothing, the pain subsides to some exxtent.. Duration: some 10 years from now.. Location: upper back.. not neck area.. near the left shoulder blade not at the vertebral column but little beside that.. left side.. Pain kind: little ticklish.. burning sensation..