i have excrutiating pain left side of face. starts in temple radiates down through jaw and into upper and lower teeth on left side. very sharp pain. have taken clindamycin now for a week, assuming it was either gum related, tooth related, or sinus infection. no change at all. dentist ruled out teeth issue, although i suffer from gum infections. went to an ent today, did not think it sinus related or ear infection. the pain carries down under the jaw as well, left side.