Based on the symptoms, this looks like oral Herpes Virus-1. These ulcers usually take 10–14 days to heal. Steroids alone can delay healing; antivirals work best if started early. This is NOT oral cancer. Cancer ulcers are usually painless and non-healing, unlike herpes which is painful and multiple. If ulcers last more than 3 weeks or pain is severe, a re-evaluation is advised.

Hello Kindly give it sometime to heal

If it’s the first time you have got herpes ,it takes a little longer to heal . Also a dose of antiviral drug like Acyclovir helps but since the active phase is over ,no point having it now .if it persists,please visit Doctor/Dentist again .

Please attach picture for better diagnosis.

Hello Please share the picture for proper diagnosis and treatment

Sometimes it takes longer time to heal . You can wait and watch . Advance procedures such as low level laser therapy is quite effective in herpes infections .