Pericornitis is the term used for the symptom you are suffering from. Partial eruption of the third molar in case when there is less space in the lower jaw often results into this. Only after evaluating it can be resolved by either removing the flap which is covering the third molar or by the extraction of that third molar depending on your condition.

Hi ! You definitely need to consult a dentist. As you have suggested, it could be an issue with your wisdom tooth area. You may need a deep cleaning and also need to take a few X-Rays before the lie of treatment can be decided.