Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
Ulcer on palatoglossal arch can be due to infection or
injury.
It can also be due to burning with any hot foods or can be due to bacterial infection.
Do not worry it will get better in 3-4 days.
You can start doing warm saline gargles and antiseptic mouthwash gargles for relief.
Also you can suck Cepacol lozenges to relieve pain.
Drink plenty of water..
Take soft and bland foods and avoid spicy foods.
Take a b complex pill daily for a week.
In case if pain is annoying then take
Advil.
If there is no improvement in a week consult an Emergency room and get evaluated.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Honey Arora