Workers compensation

So I got Letter from workers comp asking me to return to work I got a really bad couple Turner I did surgery it's did not do anything to it am still going through the pain can't sleep at night, since February i have been having pain back to back My back is killing me I just receive a letter stating that my doctor asked me to go back to Work without restriction And the only hands that I use is my right hand I cannot use my left hand to do anything what do I do from here and over it all my back is killing me at the same time what do I from here😭💔 Philadelphia