Fever is a sign of infection and you must get checked by your dental surgeon. A X-ray would be helpful for the diagnosis and further treatment protocol. For now, you can have paracetamol for pain relief. Since your drug and allergy history is unavailable, antibiotics should not be ingested over the counter.
Next Steps
Visit dental clinic
Health Tips
Keep the area clean and try to prevent food accumulation in that tooth cavity( if any).