It all started in December, about two weeks after I got a cat. I went to the doctor, I had bronchitis. for 4 months now, I have had a constant feeling of difficulty breathing, even just sitting on the couch. I went to another doctor, and he says he ASSUMES its asthma... the inhaler used to work, but now it doesnt. I'm really afraid its something worse like emphysema. I'm a healthy 23 year old male, smoked cigarettes off and on for 10 years. thanks for listening!