you probably shuold be taking antibiotics also. i had an infected tooth which really didn't cause me much discomfort, like you, i used chlorhexidine mouthwash (which is available over the counter) a few months later i developed a swelling in my neck. it turned out the infection had travelled through my jaw bone into the space of my neck and caused an abscess. i was admitted to hospital immediately and operated on the next morning. i seriously would not wait, go back to your dentist and get some antibiotics which will only clear the infection temporarily, but enough that he can do something with the bad tooth before it gets any worse.