i had a problem coughing for a couple of weeks with no other symptoms. i went out and swam in a lake and my ear was stuffed up for a while after i got some water in it. finally it went away and the cough was beginning to clear. now i rarely cough at all, but when i go i get this choking feeling and it's hard for me to catch my breath. it's really happened the worst in the middle of the night, waking me up. while not being able to breath i sometimes feel like i'm going to vomit and wind up after i catch my breath i'm burping a lot. i don't know what it is...post nasal drip maybe? anyone have an idea? thanks.