Thanks for writing to HCM forum.
The bumps can be arised from the allergic foods ingested or due to anxiety/stress .
I would suggest you to apply topical steroid
on the affected area.
Rinse your mouth after every meals.
Gargle frequently with warm saline.
Take a balanced diet ,fruits etc.
has to be administered.
Avoid spicy/allergic food stuffs.
If symptoms persists,please do visit a dentist