I have a relatively small penis(5 to 5.5 inches when erect). When I was younger I had very serious acne. I had to use roaccutane in order to treat the acne(I started using roaccutane at age 16 and continued using it until I was 1. I have read that roaccutane can slow or even stop your body's growth, is it at all possible that the roaccutane I used is to blame for my penis' relatively small size? I would also like to add that I never experienced that second "growth phase" that most guys experience later in high school. I was just wondering if the roaccutane was to blame for this?