Hi sir...
Ulcer is the break or discontinuity of oral epithelium...
There are so many reasons for ulcer...
**vit B 12 deficiency
**Iron deficiency
** stress and anxiety
**Irritation from sharp objects
**viral infection
**genetic factors
Usually ulcer will heal within 7_10 days....
Next Steps
kindly visit nearby dentist to diagnose the cause of ulcer and treatment
Health Tips
Avoid self medication...
Reduce stress and anxiety
Consume enough water. .
Any ulcer that last more than 2 weeks is noticable and it needs immediate medical attention