I have never be to a dentist a day in my life . My mom say my teeth are fine when i know there not.I have gaps, not so bright teeth and don't like to smile.Now when i chew sometimes i get this sharp pain and it hurts but it happens so quick . On the top row of my right side of my mouth (not sure what tooth it is ) im 14 and this pain happens every now and than , what do you think it is and what can i do ? 