<s>[INST] Hi, I am having a problem with one of my molars, I had a filling replaced due to decay and the filling did not take.The dentist said the filling was very close to the nerve, I was in pain for weeks and the filling didnt settle so a root canal was the next option.I have had a hole drilled and medication put in to kill the nerve a week ago, this stopped the pain for a few days but the pain is now building up again what should I do? [/INST] Thanks for your query, I have gone through your query. The pain will come down once the complete cleaning of the roots and the canals have been completed. So consult an endodontist and get the canals cleaned and irrigated with chlorhexidine and HY Chat Doctor. . If I am your treating doctor, I would have suggested you to take a course of antibiotics like amoxicillin 500 mg and metronidazole 400 mg TID for 5 days (if you are not allergic). Do saline gargling. I hope my answer will help you, take care. </s>