People around you tend to form short vision of penis. The key is to see whether the length of erection time will lead to a "cool" sex life in the future. At your age, testosterone is very strong. Your testosterone is low, your Adam's apple is not big, and you have pubic hair, which means that your development is good, but you are a little backward, and you have to continue to develop.

As for the injection of testosterone in adolescence, it only promotes the development of the penis and has an effect on the growth of the penis, but it may not achieve the results you want.

Strengthen exercise, eat properly and enhance confidence. There will be changes.