White spots on baby's gum

[Tinkjon]

I know they get white spots as they teethe, but isn't that where the tooth is actually coming through? DS (15 months) has white bits behind a tooth that's already properly out...

Thrush?

I wondered about that but isn't that on the inside of the cheeks?

No, I've had it on my tongue before. It is white or like a blister?

It was definitely white, sort of thin and stringy-looking, not like a blister. Actually, maybe I just didn't clean his teeth properly