How fast should a 14 year old pitch?

I was pitching today (i can only bench 100, i dont know if strength matters),so im kind of weak.And my friend said i was throwing the ball fast enough,im only 14 and i was watching a 16 year old pitch,he was screaming that ball,im guessing around 90-95,So how fast should i be pitching,he said i hurt his hand pretty bad,even though he was wearing a catchers mitt,and please dont leave any negative comments.