I had triple by pass surgery 13 months ago, I still experience discomfort in my chest and a knife like pain between my shoulder blades. recently I have experienced dizziness and lighted headed combined with a mucas I cough up throughout the day. I am constantly trying to clear my throat. I am a type 2 diabetic as well. my sugars are fine, just trying to find out what's going on doctors basically tell me nothing is wrong and I have to live with this.