I just had a tooth ache on a crowned tooth yesterday a bottom tooth. today, pain is now on an top tooth and is sensitive when bite down. don't think is cracked or anything. have some sulfameth / trimethoprim 800 160 tabs from last spring when I got an infection on my face and had to be in the hospital. this was also a total surprise as I have really never been sickly. will go to the dentist, but will the meds help?