I have these pains in my upper left side of my back and chest pains. It feels like something is stuck in my throat and mucus seem to be there that I cannot get out. Lately I vomit what I eat or drink and it feels like something is moving in my back and chest areas. I feel a tightening on my back and when this happens pressure is applyed to the chest which causes me to cough....only it is a dry cough. I then feel light headed or like circulation is cutting blood flow or something to my head.  My stomach gets hard sometimes and makes me look pregnant but I am not.
HiT hanks for posting your query.  I need to know your age and since how long you are having these problems.  Few possible causes are