question: Hello I recently went to the dentist to get a few cavities filled. After the visit i noticed that the pain in my one tooth was increasing. Yesterday I phoned my dentist at his residence and he prescribed me metronidazole 3x a day. I also have been taking Tylenol 3 and oragel ..when I woke this Morning my lower lip is three times its size. So my question is do i have to be concerned or should i continue with the medication the doctor prescribed?