I had an upper respiratory infection over a month ago, but have never gotten over the cough. Its not constant, but when it occurs, I actually loose my breath, start wheezing, and cough up mucus. I have no other symptoms - no fever, I feel normal. But when this cough occurs, I actually feel like I m drowning - feel like its fluid on my lungs or something. ?? My mother thinks I need a chest x-ray, but it feels silly considering I am not feeling bad. please advise.