I have facing this problem since few days. I am allergic and i have ongoing treatment for allergy from pulmonologist. I take montoluekast tab and inhaler 3 times a day. Problem I am facing is sometimes i feel heaviness in my breathing or something like i am not able to exhale completely something like that. Its a weird feeling and it goes automatically after 10 or 15 minutes. I am able to do all work, i am walking for half an hour briskly and also jogging daily in the morning. I do daily pranayam (breathing exercise) almost daily. Do i need to get tested for anything, if yes then what tests i can go for? Please suggest me why i am getting this problem? Do i have any problem with my lungs?