Any normal ulcer should heal within 7 to 10 days without major complications..... such a long duration points towards a serious etiology..... the best person for this would be an oral pathologist who will require a biopsy to confirm the diagnosis..... the right treatment can be instituted only after the right diagnosis..... using Oral gels will not give you relief.....
Next Steps
consult and oral pathologist as soon as possible
Health Tips
do not delay this treatment