Yes i had, mostly those come at the end of your breathing, but try the put yourself into a relax state of mind, and breathe out your first word in the beginning of your sentence, when you exhale, not the inhale. And to tell you more about the way you could overcome it, for my experience, i have been pushing myself out there, and accept making mistake along the way, only if i'm on a path to progress. I developed a real passion for words, and for communication, which helped a lot, i read a lot of books about communication, i enriched my vocabulary and i developed a great confidence with the way i was able to communicate with others... I also tried to visualize situations where people would cheers me on the way i talk. And it worked so much ! I saw myself not with the at-the-time condition i was in, but the way i wanted it to be, and started to notice every single moment i made a bit of progress and i rewarded myself for it. I also used suggestions to reprogram my mind and my subconscious, and i tried to explore the source of where it comes from. I saw myself not as a stutterer, but as someone with an incredible and noticeable communication, fluent and beautiful. Wishing you all the best. Cheers, Anthony.