Lately, I have had this happen about twice a year. 2 days ago, I was eating fried chicken for dinner, which I had spiced up with Habanero flakes. The chicken didn't seem to be too hot but after eating, I felt like a bone might have been stuck in my palate. I reached in to pull it out and found that I had a quarter sized blood blister there which made it somewhat hard to breath. It popped on it's own before I went to bed, but the next day it was painful to swallow. It's now 2 days later ant the pain has not subsided though the site of the blister looks less severe. I have noticed some white spots around the edges of the remaining sore. This has happened a few times in the past but this was the largest one yet for me.