Not a Mole But What Is It And How Can It Be Removed!?

Ever since I was little I had an ordinary brown spot on my stomach which wasnt big or anything but I was real self concius about it so I decided to pick it and try to remove it. My results were bad it spread an got slighlty bigger then years later I tried again why I dont know but now it is faded a pinch and got even bigger im 16 its not a health risk but its hard to have a nice stomach with a big blotch on it help would be appreciated oh and I dont want to have to go to a doctor b/c my parents will say its no big deal I tried picking slicing with a razor and pinching it very hard nothing.