Earlier this year I developed a constant constricted feeling in my chest. It’s difficult taking in a deep breath and I can’t lie flat or sit hunched over. I did a lung function test and was given montelukast tablets and a symbicort inhaler which worked up until last month. I used the symbicort up to 6 times a day and was nebulizing nearly every night due to the feeling of shortness of breath. I visited my pulmonologist yesterday and he did a lung function test and an ekg which appeared normal. He put me on foxair to use as a preventer and told me to start using Symbicort as a reliever only. He believes that the constricted feeling is caused by stress. Right now, I’m nebulizing because I can barely walk without taking big gulps of air. Please help, who has also gone through this?