You are likely not subject to an admissibility bars for the overstay as you were admitted to the U.S. under "D/S." Thus a notice or finding by the District Director or the immigration judge are the only triggers to unlawful presence accrual. That's the legal side. There is the discretionary side. A CBP officer can deny you entry for discretionary reasons including the overstay. You may want to retain counsel and get a plan together on how best to present your case to both the Department of State and CBP.
I agree with counsel Eichorn and would also ask how old you were when you left? Unlawful presence does not begin to accrue until you are 18 years of age.
Samuel Ouya Maina, Esq. 415.391.6612 email@example.com Law Offices of S. Ouya Maina, PC 332 Pine Street, Suite 707 San Francisco, CA 94104