It`s a good sign of healing. paining ulcers in oral cavity mostly rules out malignancy. Kindly avoid stress
. There are 7 `S` predisposing to oral ulcers commonly Spicy food, Sharp teeth, Stress,etc. If this ulcer persists or incerses in size for more than 1 month kindly contact your physician to have biopsy
, gram`s stain and culture also has to done to know the virulence of the organism.
Wish you to get well soon