Hi,
Thanks for posting the query,
Wisdom tooth are often tilted in position and impacted in the jaw bone which leads to pain .
This area is difficult to clean so it often invites bacterial infection leading to
redness , inflammation and swelling of the overlying gums known as
pericoronitis.
I would suggest you to visit Oral and Maxillofacial surgeon and get checkup done .
Take an OPG x-ray of the tooth.
Probably you have to go for extraction of the wisdom tooth.
Take a complete course of antibiotic and
analgesic.
Donot irritate the inflammed tissue .
Take saline water gargles 3-4 times a day to give a soothing effect.
Maintain a good oral hygiene , use
chlorhexidine mouthwash gargles twice daily.
Hope this helps out..
Regards...