Brief answer: PERICORONITIS Hi. Can understand your concern.. As per your complain the gums over and around your wisdom tooth (called as a Pericoronal Flap or Operculum),after getting bitten by your teeth must have got traumatized leading to inflammation and swelling of the gums and the condition is called PERICORONITIS. Due to pericoronitis there is pus discharge seen from beneath the operculum especially when pressure is applied to it. You should visit a dentist and get checkup done. An IOPAR (X-ray ) will be needed to rule out whether the tooth will erupt completely to the level of other teeth or is impacted( the wisdom tooth which has obstruction by bone or soft tissue over it and will not erupt by normal erupting forces). First of all the dentist will irrigate the area between the operculum and the wisdom tooth with three solutions which are hydrogen peroxide,beta-dine or chlorhexidine and normal saline. This will help to reduce infection, inflammation as well as flush out the area of any food debris. If there would be any deposits like calculus ,plaque etc then removal has to be done using scaling instruments. If there are signs of bacterial infection like fever,lymph node enlargement a course of antibiotics like amoxicillin and metronidazole has to be taken. Ibuprofen can be taken to relieve pain if present. Do warm saline gargles as it has a very effective role in reducing inflammation. Always keep the area clean. If the wisdom tooth is impacted then you should get it extracted as it can cause recurrent episodes of the same problem. Hope your query is solved.. Thanks and regards.. Dr.Honey Nandwani Arora.