Hello..... your height  depends on average  height  of your parents..  Once maturation occurs growing end of bones fuses and one cannot  grow  further after that age...so growth cessate usually at the age of 18.you must learn  to live with fact..  Don't  try medication for growth  they won't work. Cycling, swimming, skipping, stretching exercise may help you..  Harmone related to growth  are endocrine harmones they act on every cell in body notnl only increases growth, you will suffer from unwanted effects of harmones..