All guys develop at different times, and it’s possible that you’re a “late bloomer”. However, it’s important to discuss your physical growth (height and muscle development) as well as your sexual development (development of armpit and pubic hair, and growth of testicular and penis size) with your health care provider at your annual checkup if you have concerns. Sometimes asking your father when he developed pubic hair (if you’re comfortable asking) may give you an idea of when you should start to develop pubic hair.