Hard Bump on the roof of my mouth?

[Hockey Fan]

I have a hard bump on the left side of the roof of my mouth. It isn't very big, but not very small either. I have been to my Dr. a year and a half ago and he said it was nothing to worry about. I have had it for approx. 5 years (basically as long as I can remember), I am 21 now. There is no pain, aches, or any effects from it. Basically if I couldnt feel it with my tonque and finger, I wouldnt even know it was there.


Does anyone think there is a cause for concern? Should I follow up on it with my Dr. or Dentist? Oral Specialist?

I'm just not sure. 5 years, no negative effects from it at all.