<s>[INST] I have have an infected tooth/gum that has gotten worse the last couple of days with more intense drainage. A root canal was done about a year ago, but about 2 months ago more of the tooth broke off to the gum line a recently the gum became infected.Last month, I had a pacemaker moved behind the muscle, I noticed about the same time the pus drainage started to increase the scar drastically changed from health looking to inverted and as if it trying to open up on one corner.  Could I have an infection in my bloodstream? Should I go to the ER? [/INST] Hello, If the root canal treated tooth can be saved,re-rct has to be done. If tooth cannot be saved,get it removed soon. Take antibiotic cover to prevent infective endocarditis. Get your blood checked to rule out chance of infection spread into blood. Get your teeth cleaned. Maintain good oral hygiene. Use chorhexidine mouthwash to gargle. Hope this helps. </s>