When do you turn 18? If you left the US while still a minor, your overstay doesn’t count against you, but once you are 18, you will be banned from legal reentry for 10 yrs with your length of overstay. Are you fully aware of the consequences of being undocumented? You just won’t have the DACA sympathy in your favor as you were so old when you arrived. Have you ever talked with an immigration adviser?