Mental Stuttering?

Mental Stuttering? I've had a stutter all my life, used to be really bad (like really bad. Needed speech therapy for years) when I was younger. Got more manageable the older I got, but I wanted to know if anyone else when in a bad stuttering fit will stutter with their words mentally? Or like have a that pause in your brain when you can't finish a sentence almost? Like when reading, or just thinking about some thing. It doesn't happen often with me but I've notice that if I'm in a bad spot with my stutter I'll stutter with my words that I'm thinking about or when reading. Really, I guess I just wanna know if it's just me or not?