I have been having severe upper back pains for the past 3 days. It started in my left shoulder blade and going up on my neck, even to my head, down on my arm and ribs (sometimes I even feel it in my breast). Then it started migrating to the right side as well. It can intensify while breathing and sometimes I feel I can't get enough air. I feel numb and not well at all, I don't have a fever but I feel cold chills from time to time. I don't know if I should go to the emergency or just wait for it to pass. Could it be lung related? I am not coughing or anything.