The thing that helps me out and I don't know why, is having the phone on speaker, anytime I'm having a bad stutter day and I need to talk on the phone it's done through speaker, but all in all man, try not to be afraid because they might not even acknowledge a stutter. All my friends say they don't know I have one. Everyone is always talking inside their head to themselves and usually pays more attention to that voice than anything, don't sweat so much.