I'm a little confused by your description of what you found. You mention a lump on the floor of your mouth and then you refer to ulcers on the roof of your mouth. The title of your post says lump on the roof of the mouth. See why I'm confused?
Is the lump on the bone below the teeth or the floor of your mouth?
One reason that the age of oral cancer patients has been shifting to the younger age group is due to some cancers being related to
HPV (human papiloma virus). There is a great deal of information on
HPV on this site and you can find it by using the search engines.
Who are you going to to get your lump and ulcers checked out? When is you appointment?
If you can give us more specific information, we can be more helpful.
Jerry