From last few days I have cold that I am only able to blow out in morning , when I lie down my nose and throat feel like they get blocked with phellem , also having problem to breathless , am not able to breath when I lie down it feels like oxygen is chocked in between chest area only not getting down in stomach n other body parts . I can easily do 1 hour cardio without getting out of breath but normally when I am trying to sleep or sitting i feel this breathless even sometimes when I am eating food . Already had azitheral and montair . Please suggest