Happens to me constantly. Whenever someone asks me to repeat something I said fluently, it gets a lot worse. But more generally in my life I notice the more attention I'm paying to how I sound and how I come across, the worse the stutter gets.It's why I stutter less after a couple of drinks or in moments or crisis/adrenaline, and even during/after sex. But that might be because I feel more relaxed and maybe that's a big part of it too. A stutter is a psychological phenomena in general, though.