i had it until 19, when i started juicing. but moment i started i also started AIs, get at low bodyfat, use non aromatizing aas for a while with AIs once or twice a week, it should go away, atleast it did for me.. no reason for your body to develop or keep boobs when you have almost zero estrogen and tons of male hormones floating, it will reduce months by months until it go away, just like female bber, they lose their boobs when using gear+AIs..