Hi. Welcome to Healthcaremagic. I read your query. Cheek pain can be due to various reasons like burn from something you eat or unintentional biting or mouth sore or some medicine side effect, tooth or gum disease etc. Is it located to one particular site only? Check if there is some red or grey white area on cheek. This would be stomatitis or mouth ulcer. This will take 2-3 weeks for healing. Have you had fever recently? Check if there is infection in surrounding tooth or gum. Its treatment is required then. Take multivitamin A to Z one capsule everyday for 2 weeks. Take healthy diet rich in iron, vitamins. Maintain good oral hygiene. Apply Lidocaine gel before eating to reduce burning. If it persists or worsen, visit a dentist. Hope the answer helps you. Thank you.