That's it exactly! I get worse if I eat any corn related product or Sugar or even a lot of carbs. It's a really frightening experience as I generally end up hyperventilating. What about your voice. I find when my breathing is bad then so is my voice, not croaky just really weak and I don't have sufficient breathe to get to the end of a sentence. On the up side, at least it gives me a good indicator to slow down and sit quietly for half an hour.