I am 19, female and diagnosed Anorexia nervosa binge purge subtype – in the past week I have been having sharp pains in my left collarbone region and upper left rib cage which I am sure is my supraclavicular gland – it is only my left collarbone that causes real discomfort whenever I hiccup, stretch, attempt to purge etc. the rib hurts when I try to breathe deeply. I have had a rare, sporadic mucus cough, it is not persistent it happens when I eat or randomly I will inhale and have to cough and clear my airway of the mucus. This started a few weeks ago I believe it is caused by accidentally aspirating my vomit a few times before it began. Is this an infection or should I be worried about possible stomach or esophageal cancer?