Hey buddy take it easy dont beat up on yourself you will grow.
Your still young and I dont beleive body size makes a difference in penis size.
Allot is genetic makeup and who your ancestors were .
I heard about a study around 5 yrs ago where they said amish men had the most girth of thier penis and american indians had length you never know grampa may be part amish and gramma coulda had some indian in her .
Keep youre head up and be you its too early to worry about these things
work on you your schooling and how to be an outgoing and honest person
these things matter more .
When you grow up a woman will love you for who you are .
And when you make love with your mind body and soul then she will always be satisfied.
Love making happens on so many different lvls not just one.
Anyway I hope I helped brako