my boyfriend has toth pain poften, a visctim of not having his teeth taken care of growing up.  they often prescribe him an antibiotic for the "infections"in his teeth and apain pill.  He has gone through a recent 10 day of penicillin, the usual antibiotic, ending about 10 days ago.  However, now, in addition to pain starting up on his lower teeth area, the area underneath his tongue is also swollen.  I have recommended probiotic to help but what else can he do, prior to him obtaining health insurance next March?
In case of infection in his teeth its advisable not to wait for insurance.  These episodes of pain won't stop unless and until the infection is taken care of by dental treatment. Infection in the teeth can be treated by Root Canal Procedure which I am sure your concerned Dentist must have advised you. And infection of gums needs to be treated by scaling and if needed flap surgeries which also I assume must have been mentioned by your Dentist. In short, getting treated is only the ultimate option before the infection results in loss of tooth. There are no medicines which can cure the infection of teeth as called as decayed tooth.