That’s one of the very common presentations of wisdom teeth. The reason for it impinging the cheek could be 1) its position 2) cavity or a sharp point on the tooth.
Next Steps
Please visit your nearby dentist and get it clinically checked. An X-ray will also be required to check for any source of infection developing inside.
Health Tips
Long term irritation of the cheek may cause it to develop ulcers and inflammation. Use salt water gargles and pain relievers for short term relief. It is often recommended to get the wisdom tooth removed as a permanent solution as the symptoms keep recurring.