HI ,
This looks like a reinfection of the same tooth,visit a dentist nearby .
please dont be so scared. It will not require a general anaesthesia. No this cant be tackled with medicine alone. once the infection is reduced with antibiotics a re root canal will be planned and done.
Next Steps
Consult an endodontist / dentist near by
Health Tips
once u visit the dentist near by talk freely about ur anxiety the doctor will take care of it . dont worry