Hi Ashley, Welcome to HealthcareMagic Forum.
You have developed a Canker Sore
secondary to Hot food. Your Headache may be related to this. Not to worry as it will subside on its own in 10 to 14 days. It sometimes may last up to 6 weeks. You can follow these steps which may make you feel better, Avoid hot beverages and foods, spicy, salty foods and citrus fruits. Gargle with cool water or eat popsicles. This will be helpful.
Consult your Doctor immediately if you develop fever
, skin rash
or difficulty swallowing.
Wish you Good Health, Take Care.