Pb4, that is very interesting that you have the same throat sensation and you have CD and it doesn't seem like anyone with UC has it or at least they didn't reply... :), I didn't feel any burning at all, it was an annoying "stuck" feeling, like when after taking a pill and it feels stuck, but I hadn't taken any pills that day, it was very annoying but not painful at all.
Here is what happened about the "fistula": During one of my sigmoidoscopies, my GI and I saw a rectal ulcer tunneling towards my vagina, GI estimated it was 1 inch deep... Then after 3 months on Remicade, it was down to 1/4 inch... so that's why I say almost fistula, I guess I should change it to 1 inch deep ulcer... As for tests, I just had an upper GI xray to test for Crohn's a few weeks ago. If it comes back fine as I am guessing it will, I will try to get the Prometheus test and an Endoscopy test. My GI keeps saying he wants to take my colon out and I want to be certain I don't have Crohn's first. I have never told him about the throat thing. It has never bugged me as much as this time and I never thought of it. I will tell him next visit, though! I think by now he thinks I am bonkers! Oh well!