1. you haven't mentioned about your age,height.
2. practically speaking height of a person increases till the age of 18, there after the epiphyseal cartilage
of bone closes and prevent further lengthening of bones.
3. If the physique and height of parents are short, it is possible that the off spring will also be short in stature.
4. make sure you get proper sleep, remain stress
free,take nutritious and well balanced diet aand practice YOGIC exercises that stretch back and spine.