question: I have a chronic cough for a few years now.  I've had a chest xray and I was informed it came back clear.  My chest feels tight and I feel like I am holding my breath for a few second before I breath out.  I also feel as though I need to clear my throat but nothing is there so when I cough, nothing comes up at all.  It's only irritating my throat.  I wen to the doctor four weeks ago and they put my on medicine for upper respitory but told me my lungs sound fine, also tested my breathing and said this test was fine.  Should I go to a specialist?  Could it be bronchitis or asthma or could it be anxiety?