Hello... 5.4 is not dwarfism ... Many are there with height less than yours...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 in increasing your height by 1 or 2 cm