Thanks for asking the query,
According to your symptoms i suppose that you had developed an ulceration on your upper lip.
This can be due to the hormonal changes, nutritional deficiencies, poor oral hygiene
, dry mouth, GIT disturbances, sinusitis
, inflammation of gums that had spread to the vestibule.
I would suggest you to visit the Dentist
and get the checkup done.
Go for symptomatic treatment of complete mouth scaling and polishing.
Consult a Physicain and get the checkup done, go for treatment of xerostomia
Take complete balanced diet, drink plenty of water and keep yourself hydrated.
Maintain a good oral hygiene, take antiseptic mouthwash twice daily.
Apply Dologel oral ointment topically over the affected area.
Hope this helps out.