I am 17 and very curious about my erect length to flaccid. Sometimes my flaccid length is around 4 inches before an full erection or after, but sometimes during the day during a piss or something it's barely 1.5 inches long with like 2 inch inches girth at best especially when cold. I was changing in the locker room and my flaccid length is very small compared to everyone else my age. My erection on the other hand is fine and it grows to 6.7 inches length and 5 inches in girth measured from above the pubic bone. Is this normal ?