I ve had a hacking cough for 3 weeks now. I ve been to the doctors twice last week. One said I had upper respiratory infection, which I knew I didn t, and the second dr didn t quite know what I had, but ordered a chest x-ray which he knew would come back negative. He also gave me an inhaler, and promethazine with codeine. The past week my cough has died down some, but I still have the hacking cough as well as it gets so bad that it feels like my throat is closing up making it extremely difficult to breathe. I use the inhaler to help open the passage. I also choke so bad that I vomit at times. I have no other symptoms. What could be causing my throat to swell during my coughing episodes, and what is causing the hacking coughs?