Words beginning with M or B

Words beginning with M or B Hey everyone, I've always had a stutter, mind you not so intense, but I never really researched on why particular words trip me up. It especially happens with words that begin with an "m" or "p" sound and I just begin repeating the sound until eventually, I'm able to get the word out. Anyone have articles or papers discussing this issue so that I can learn more about what is happening exactly? Thanks!