Ask your dentist. Antibiotics do not resolve tooth issues. Definitive dental treatment does. Please call for an appointment.
Remove the cause. Are you taking Amoxicillin on your own or was it prescribed by a dentist? In order for infections to be resolved, the main objective is to treat or remove the cause of the infection. Antibiotics along with your own body's healing mechanisms are secondary. A dentist who is treating you would be the best one to determine why you still have an infection and what treatment\antibiotic is indicated.