I totally understand how you're feeling, I've got a mild stutter myself, but I largely blame it on anxiety. What it comes down to is the confidence you give yourself, and say it's okay if you mess up or feel what you said isn't perfect. I find I put myself under too much pressure into saying it right, which fuels the anxiety dumping lots of negative thoughts into the mix which then causes the stutter. Stay strong and you're definitely not the only one.