You must consult an Oral Medicine expert advice who is a specialist in Mouth and Jaw diseases and cancer

Hello mam..... Ulcer is break or discontinunity of oral epithelium There are so many reason for ulcers *Stress and anxiety *Vitamin B12 deficiency * Gastric disturbances ,Viral infections, Irritation from sharp objects *genetic factors APPLY DOLOGEL for pain relief(it cause numbness of affected site.. you can use before eating) If the ulcer is due to vitamin deficiency then multivitamin tablets supplements should be given

First of all tell whether u have history of ulcers in mouth in particular duration. And most important how is ur digestive tract from last one week

Apply hexigel or dologel. Avoid hot and spicy food. Take vitamin bcomplex tablet. It will resolve within a few days

Do you have fever also for 3 days ? If so you might need to check yourself with a doctor at once if it’s continuing to not lessen. Regarding oral ulcers, you can try benZocaine gel (mucopain gel). if you are pregnant or could be pregnant please check with your gynaecologist. This will numb your mouth where you apply so you may not feel taste even after applying. But it will help before you eat etc. other times apply oraflora and keep your mouth moist with constant sipping of water. Can also use baking soda 1 tsp snd cooking salt 1 tsp in 1 liter water as rinses. If you want a more detailed assessment you can consult as info provided if not sufficient.