The best you can do is contact an Odontologist; you can contact Dra. Chin clicking here

As a general guide, you can:

If the pain appears when exposed to cold, bite or chew, brush your teeth or spontaneous: Boil a cup of water with a few salt grains. Do mouth a mouth wash with it as hot as possible.

(NEVER DO THIS IF YOU FEEL PAIN WHEN EXPOSED TO HEAT). Do not use any cream or ointment in your face If the pain appears when exposed to heat: Take an analgesic/anti-inflammatory that has been prescript to you before by a physician (CAREFUL WITH ALERGIES)