Wat age do you stop growing?

Hi i'm 5'7 and i'm 15 years old. I wanna know at what age do you usually stop growing.. People form My dad's side are short and my mom was tall but shrink due to her age xD but my pediatrics when i was bron said i'll pass my parents. (already passed my mom , as tall as dad) . But my half brother and sister at 5'10 (sis) and 6'1(bro). Like i'm in high school and i'm short compared to everyone (probably because i don't wear nike's that increase your heigth) And i think i already had my growth spurt and finished puberty like i have hair growing everywhere on my stomach and little tiny bit in chest and in my *** -.- so will i stay 5'7?