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..  Do it in the early morning..  Have protenaceous food items...

No it is not possible to increase height now because by now your bones have completed their growth.