I have recently bitten into a really hot boiled potato and now have what feels like a huge, pendulous blister on the roof of my mouth. It doesn't hurt but it feels really odd.
How long is it likely to be 'hanging' around? Days? Weeks?
You will probably find that it bursts quite soon and the loose skin flap will be discernible but it too will be shed. A tender area will be present for a short time but Sqad is correct - healing is very quick.