I have had a cough for a little over 2 weeks. It started out as a little tickle followed by a dry cough. I went to a doctor after 1 week. The cough had progressed and gotten worse. He said he thought it might be sinus related and told me to use my Flonase 2 times a day, gave me Zithromax, and tessalon perles for the cough. I finished the antibiotic Thursday. The cough medicine isn t working. I do not think it was sinus related. I have not had any sinus issues before or after the cough started, no drainage, and no mucus. The cough has gotten a lot worse. It now sounds very wheezy when I cough. I start having horrific coughing fits that last several minutes. I have been coughing up white, frothy stuff. I cough so bad that I cannot breathe and start gasping for air. I have coughed so bad that I have thrown up several times. My chest is hurting badly as well. Any ideas what it might be?