extreme pain

about 1 year ago i was working fast food, working drive thru i was leaning put thw window my shoulder would hurt badly, to the point i wasnt able to pull my pants up or put a shirt on. i went to the er && they said something i was just having spasms in my shoulder/neck. i work retail know and it still. i dont have the insurance and already owe 2grand for the last time im thinking about going though but want to see what stuff yall have done for yall to stop pain bothers be badly just the simplists things i cant lift then goes all the way down the middle of my back my shoulders start burning.