ulcer or blister on millys gum

My son has just applied some teething gel to millys gums , And he has noticed she has a ulcer or blister on her gum.HE has just shown me it and it looks like a blister what could it be and could it be down to the teething?

a friend of mine had a yorkie and he banged his mouth on her laminate flooring while playing, causing bruising on the gum which caused an ulcer.
She rang the vet who said if she is any discomfort with it bring her in and he'll take a look at it prescribing antibiotics to put in her food that cleared it up.
he also said she can apply bonjela as its a teething gel but also a Anaesthetic which will numb the area slightly getting rid of any discomfort.

It could possibly be from teething , unsure as none of mine got these when teething, but could also be from chewing things that have poked her quite sharply in the gum (aka stick by the look of your avatar haha)

It could well be teething, but as she is so young, I would personally let the vet have a quick look.

Thanks for replys i will have to take her to vet with it.I only let her have rubber toys myself its my hubby who lets her Have sticks to play with when he takes them for walks.i dont think she has strached her gum they isnt any Marks on her gum. A friend had a look at it for me earlier and she said it looked like a absesois.i hope not they can Be very painful.I will just have to wait and see what vet says

Took milly to vet with the ulcer. And was told it was just down to the Teething and nothing to worry about.Ive bought her some baby bonjela.The ulcer has nearly dissapeard now. Which im very pleased about

Great stuff, they do make us worry!

glad Milly is okay.. how old is she anyway?? The bonjela is a good idea!