Welcome to HCM.
You are having swelling on right side of face between nose and ear.
It is not visible unless mouth is opened.
It is not painful, but,slightly tender on touch.
With all history given by you, I feel that it is either fibroma
Both the conditions are benign.
The diagnosis may be confirmed by biopsy
For that , you consult either dermatologist
The lesion may be excised under local anaesthesia.
If it is not embarassing, it may kept untreated.
I hope you got my answer.
Dr. Ilyas Patel MD