I can understand ur concerns.
well actually the thing is if there are several tiny bumps cluster together and having little whitish fluid in it then it is suiggesting Herpes
Simles Labialis(dont get worried by its name :) its a common thing and can be treated),but it will itch and burn usually.
But if not and they are appearing on several different places then it may not cold sore
and could be Acne
or Peri oral dermatitis(again a variant of acne).
I would have suggested the treatment but these questions should be cleared before treatment.
But in either case there are good medications which will take care of it so dont you worry you just have to see a GP or Family doctor to have look.
and all the best.