Hi Hankster,
Glad you found this forum. I have learned so very much from it. I'm not sure I have the exact same thing going on, but I do have times when I feel like my throat is closing. It feels like pressure, and at that time I will not drink or eat anything because I know I will get choked.
I cannot carry on a long conversation without running out of breath, which makes everything worst....but maybe not for my family, because I have to shut up

.
I also get tired when I chew alot. Mainly meat. I don't eat alot of meat, except chicken, but my jaw still becomes fatigued.
For me, this has been a hard road to travel. It seems everyday it is something new, and my body is always betraying me.
Especially when I live with my 2 sisters, who are both sick as well. I am treated like there is nothing wrong with me....which is disheartening
Anyway, I am learning, and hopefully your new set of doctors will really care enough to help you.
Good Luck to you in your journey. There are awesome people on here. I am sure someone will get back to you real soon with much more knowledge than myself....

Deb