My voice doesn't come out in the morning, it always cracks sometimes it doesn't even come out at all i'm 16 and it's been going on for months why?

Maturation.: A boy's voice may change a lot from ages 12-13. This often tapers down between ages 15-18. It is largely related to testosterone. Here is a good article: http://www.ncvs.org/ncvs/tutorials/voiceprod/tutorial/changes.html

Puberty voice change: This is part of the process of puberty where your voice changes as you progress into adulthood. Try a cool mist humidifier at your bedside. If you feel that this is not the problem then consult ENT to examine your throat and vocal chords. Just don't continue to ignore it.