Early pain is a normal phenomenon, and it will pass after a long time. If the pain is severe and lasts for a long time, it may be caused by infection and inflammation. I suggest you drink more hot water, have more rest, eat light food, and don't eat spicy and irritating food. It is suggested to take amoxicillin and clavulanate potassium, Huanglian Shangqing tablets, metronidazole and diclofenac sodium for treatment.