I know when I’m going to stutter, kinda

I know when I’m going to stutter, kinda This is probably because I used to stutter when I was younger, but I know if I am about to stutter before I even start saying the sentence, and on what sound. The issue is, this is somehow limited to my subconscious so I know I am going to stutter but have no idea why. Sometimes I try to rephrase the sentence before saying it, but this rarely works. Any explanations?