I have a bump on the roof of the my mouth that changes size during the day and changes from soft to hard through the day.

Visit your DDS: Any unusual bump anywhere inside your mouth that is not healing after 10 days needs to be checked out. See your dentist for evaluation and treatment if needed.

Possible abscess: Get to a dentist to have it evaluated. Fluid pressure varies to make the changes you notice. If it's dental in origin, there are treatment options.

Dental consultation: Go to a dentist and if a referral to an oral surgeon is needed, go.