Two weeks ago I started suffering after exercise with extreme breathless episodes, which hasn t stopped. It happens every time I do physical exertion/exercise. I have more problem getting breath out rather than allowing breath to get in, and now I ve started coughing during the attacks too. It s also happened today while not physically exerting myself but around smoke. When it happens I feel like somethings irritating my airways and it feels really uncomfortable, almost like someones squeezing or tightening my chest/lungs. My doctor took pretty much one look at me and said it was anxiety and put it down to depression and placed me on 20mg Fluoxetine, but I really don t think it is, and think it s asthma or something else and I just need a second opinion.