So I was born with brown eyes but when I was six I saw blue from then on my brown eyes have been turning blue now almost half of it is blue and I'mma kinda scared of what may happen
Eye color is not always caused by the eye being a particular color. In many cases it is an arrangement of the tissues in layers that only reflect a certain color. You can see the same effect in a soap bubble as the film of soap becomes thinner. So you have changed the arrangement of layers in your eyes, that's all.