No, it comes a few days after you are 18. Or maybe not. You best wait and see. Be sure to let us all know in August for we are all waiting to find out. Maybe wait till December so you can tell us how much you grew.
Do you hit a grow spurt at 18 if you haven't really grown hardly any to none ? Parents 5'2 dad5'9 I believe so I'm 5'7 thanks Chris