Thanks for asking the query,
After reading your clinical history i suspect that there is pus formation from one of your roots of front teeth i would suggest you to visit the Dentist
and get the checkup done take x-rays of the tooth.
If there is presence of infection you have to go for root canal treatment
of the tooth followed by prosthetic crown placement.
If it is a gum abscess
you have to go for complete mouth scaling, polishing and curettage.
Maintain a good oral hygiene
use antiseptic mouthwash rinses.
Hope this helps out.