Yeah, now that you mention it. I think eating something with chopped hot/cayenne type peppers in it is what actually caused it.
I get them a lot on The Master Cleanse too. But some would argue it's "detox" or the "lemons". Whatever.
3rd day and it's fine now. I can talk but can't open my mouth wide like yawning. I'd swish oil in my mouth right after eating something. I wasn't trying to clean anything but the cankersore so it's probably not even considered "pulling". It definitely lessened or stopped the pain and aching when something irritated it.