I will turn 15 in 3 months and I am 5'1. I got my period a month before my 11th birthday. I read that girls stop growing at 14 or 15, depending on when they started puberty. I took a tanner stages test that said I was done growing. All of the other height predictors I have taken tell me I will be 5'1 or 5'2 at 21 years old. I have zero problems with my height. I'm just curious.