Hello, You stil need to treat the source of the infection after being placed on an antibiotic. This antibiotic helped control the spread of the infection and calmed down your symptoms. Now you are faced with the area around the tooth reacting and swelling to make the tooth rise up from the socket. You must treat the tooth. The options are a root canal or extraction. Drainage most likely is occurring due to your description. This is acidic and could bother your stomach and cause systemic affects including a fever. This may have been draining for a long time before you became aware of symptoms again. You most likely will need to start the antibiotic again. Schedule a visit with your dentist to decide how to proceed. Chances are the upset is all coming from your tooth. Rinse your mouth with warm salt water and take some anti-inflammatory medicine such as Tylenol or Motrin. Thank you for your Inquiry. I am glad to offer assistance and hope you consider my suggestions helpful.