Hi, Greetings. Am Dr Shanmugasundar Endocrinologist. Height potential depends on your parents height,  your nutritional status and environmental factors. You haven't mentioned your and your parents stature to say whether you are within your genetic potential. If you are really concerned first we need to see whether your bones have fused or not.  It tells us remaining potential.  Further treatment if needed depends on it. Plz meet an Endocrinologist.