Have it checked
It could be anything ranging from a TMJ syndrome
, to referred pain pattern from an atlas bone fascial restriction in your neck, to tension headache
, and needs to be evaluated physically.
See a osteopathic (do) doctor, who can do an osteopathic exam on you to check your head, neck, spine, extremities, sacrum to find the cause. S/he can treat you too, or image if needed, or refer to dentist.