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 :1. Cervical radiculopathy: Nerve compression at the level of back of spine can cause pain or numbness or tightness in neck arm back chest region. 2. Heart problems: Inadequate blood supply to heart can cause the problems you are facing. 3. Esophageal disease : Problems in food pipe like ulcer constriction of food pipe spasm of food pipe can cause your problems.  If I was your doctor I would have got an ECG and Echo test to make sure your heart is ok or not. If it comes normal then I advise you to get upper gastrointestinal endoscopy to look in your esophagus and lastly an MRI cervical spine to see for nerve compression.  Kindly get the tests and revert Any clarification feel free to ask. Regards.