My symptoms are as follows...I begin feeling like I have a lump in my throat, at first I feel like I need to burp or swallow the lump... can't do either. The next thing is difficulty breathing, as though I can only breath out of one side of my throat. This turns into pain that goes from my shoulders to my ears. The lump in my throat begins to feel like a cluster of hot gravel. I experience slight dizziness and nausea. For some reason, my body tells me to drink a coke as fast as I can in order to make myself burp. Then, I do begin to burp and blow my nose. This goes on for quite some time, and I have to really work to steady my breathing. The last episode I had like this lasted for at least 15-20 minutes. By the time it was over, I was trembling and exhausted. I also had a slight head ache for the remainder of the day. What can this be? Any advise??