I have a big red bump in my mouth and feels like a bunch of tiny ones allover in my cheek i have had it for a year and been to two doctors w no idea.

Oral medicine : You can see a periodontist/oral medicine specialist for examination and possible referral to a pathologist for biopsy since those lesions are a year old.

Red bump: Red bump which is usually found in the midline is a benign bony tumor known as torus palatinus.Check with your dentist or oral surgeon.

Bumps: Any swelling of longer than 2 weeks duration should be evaluated now. Start with your Family Dentist. Referral to an Oral Surgeon, Periodontist, or Oral Medicine Specialist may be in order.