I am having pain and pause discharge from the left corner teeth.I am not feeling well ,also it caused very bad headache .Already consult the dentist,she prescribed some medicine Clavam 625 etc .But again after 15days same issue is there.Sometimes cheek bites are also happening.Sometimes i m unable to brush and eat any cold items.Please suggest what to do ? Will it be a severe health issue ? Though i am a sinus patient.