Hey! It sounds to me that you've got a stammer, also what I have since the age of 5. It started after severe but not so severe trauma - I was busy playing with toys when my parents were saying their goodbyes whilst I stayed with my grandma, but I sort of ignored them and kept on playing until I realised they were gone and became completely mortified and started crying horribly because I felt abandoned. They came back for me and I fell asleep sobbing. The next day I couldn't say a word. My experience is that stammer is something that you can work over. What has been left of it for me is quite mild, but I sometimes feel limited by it. Even though I am quite extraverted, sometimes I feel like I want to say something in a group of friends, with family friends or at a lecture, but I just can't get myself to do it because of the fear (many other things are behind this). I've developed coping mechanisms that cover it up very well, so not many people realise until I tell them. On a side note, I met a guy who started stuttering at the age of 19 after he got scared by a rooster - in that sense, that is also trauma. It can honestly be anything.