have u had a chest x-ray? if not u should. i have had pluresy twice which is fluid arround the lungs. it is uncomfortable and can not be cured just has to run it's course. but having a chest x-ray would rule out fluid in the lungs also.
i just had flu and my cough will not go away. i've had a mild fever for 10 days. pain in left chest/back when coughing. also cannot take deep breath without a big coughing session.