question: I have a bad taste in my mouth and I can feel that the pus is coming from the back of a crown...I think number 15.... No pain..it s not elevated...possibly a fistula. Taken amoxicillin for 4 days and it s better...but I can taste the foulness when I draw on that tooth...not as bad but still present. Going to a specialist after my round of antibiotics. Dentist couldn t confirm through xrays that it was an abscess. Referred me because the issue was out of his scope. Will the antibiotics take care of the abscess or am I doomed to see a ED?