I have a smallish lump on the inside of my cheek. It is located on the left side, near my front canine teeth and molars. It s not between my upper and lower jaw, it s right by my upper jaw. It is painless and the same color as everything else, it just sticks out. I also have roughness on the inside of my cheeks where my teeth meet. I don t smoke , or drink, or any of that really bad stuff.