It was very less in the beginning. It happened only with senior teachers or a large group of audience. But it has increased. Maybe because of teasing by some friends or maybe because of some habit or maybe because of bullying or maybe because I had convinced myself that I did stammer or maybe because I talked less that eventually my words coordination wasn't perfected It wasn't good at all. Shying away from situations which involved speaking in front of Audience meeting new people, not talking to your crush, same story as all. I mainly have blockers in speech rather than prolongation of words