hello well i am 27 and recently back in November went to the hospital for pains in my arm and chest it was discovered i had pneumonia. But a few days ago the pain came back my phlegm when i cough i a little brown. but i only cough once when i first wake up. I do smoke on a regular basis. the pain is mostly in left arm frm should to right before the elbow but sometimes i get the pain in my right arm too