you need to see a dentist
if its causing any kind of pain or discomfort. also, i am not sure if these spots were always there and you happen to notice now or they have actually suddenly appeared. if they look like how mouth ulcers are then you vitamin b12
capsules and need to drink a lot of water. if it does not pain or feel like an ulcer, you can use mucopain ointment if there is pain for as a provisional relief aid. but with the information you have provided...it does not sound as anything to worry about.