In most cases, the penis will reach its expected size (and stop growing) by the end of puberty. Puberty usually ends about 4 years after it starts. During puberty, the penis grows in length first, and then in width. The growth rate is different in every person, so if you think it stopped growing and then started again, that’s totally normal. If you have further questions, feel free to make an appointment to talk to one of our providers. They’re specifically trained to care for teens and are non-judgmental!