Strep not reacting to antibiotics

Patient: Doctor,I was diagnosed with strep throat, via the rapid test, and have been on pannicillin VK 500 MG for about 48 hours. My temperature was 102.3 when I first went to the doctor. This morning my temperature was 100.5. I still have white spots in my throat, and my gums are swollen. Should I go back to the doctor? Or should I give the antibiotics more time to work? I was told that after 24 hours of treatment, my fever would drop, and I would not be contagious anymore. Also, I have very little pain in my throat, aside from my tonsils being swollen.Thanks for your help,Matt

Symptoms: White spots in throat, Fever, swollen tonsils and gums