15 week old puppy blisters

Hi all,
i was wondering if any one could help me out my 15week old has had these three blisters on his lip for a few weeks and recently i feel that they are getting bigger, should i take him to the vet or are they harmless?
Many thanks for any help you give in advance.
Diane x

Personally I would pop to the vets - you could always ask to see a nurse who will then tell you if a vet id needed, its not something I have seen I am affraid x

i would also just in case, i think they look infected

Yeah I think the large white one looks naughty, best get them checked out to be safe.

Could it possibly be a bit of puppy acne?
Vet's would probably be best incase pup needs any treatment

Let us know how you get on at the vets x

thank you guys, sorry was working all day yesterday, i called the vet going down next week, they don't seem to be bothering him so that's good i guess, will let you all know how Chunk gets on. Thank you again xx