Below are some pictures of canker sores, in-case you are interested in having a look. The idea of posting these is in-case you need a picture for some reason, e.g. you might be a student doing an essay etc. Or you want to check if the canker sore or mouth ulcer you have looks particularly abnormal.

Quite a large one here:

This one looks pretty nasty, many sores in on area on the bottom lip.

A mouth ulcer with a nasty red area surrounding it. Know what this feels like !

Completely on the outside this time, might be less of a nusience when eating, but not a great sight or if you are kissed.

I have to admit I was sqeemish to look at these photos and add them on. Sorry if I have put you off your food!