Is there anyone here who discovered that their stuttering comes from a trauma?

Is there anyone here who discovered that their stuttering comes from a trauma? I'm asking because I've realized that I might ve started stuttering as a result of bullying(being a needy kid), creating a shield for social interactions, a defence mechanism. Now I'm 20 and it still makes me very socially anxious, living in constant fear of this manifestation. But I know very well that I can stop stuttering, as I've had a lot of instances where my speech was fluent and clear. I'm just wondering what steps I would need to take in order to stop stuttering, aside from speech exercises, because they don't really do anything for me, I tried.