"I don't know what to do. I give him Tylenol but it seems to be hurting him."

It is recommended to monitor the situation if there are no other symptoms and the child is eating. Tylenol can be given for pain relief if needed. Avoid spicy, hot, or irritating foods for the next few days, ensure the child uses a toothbrush with soft or very soft bristles, and replace it at least every 3 months. If the lesion persists for more than 7 days without improvement, it is advisable to consult a healthcare professional as a precaution.