Hey I don't speak Turkish but I used Google Translate and read what you wrote about the stomach feeling when you stutter. Just a guess but this might have to do with your breathing and your diaphragm. One hypothesis of what causes stuttering is that your body tenses up the diaphragm when speaking as an instinct. Personally, diaphragmatic breathing (breathing from your stomach basically) does help me when I have a stutter. ​ I encourage you to do some reading about this: https://www.youtube.com/watch?v=Mg2ar-7\_HfA ​ https://stutter.ca/articles/2014/07/what-causes-stuttering-valsalva-hypothesis#:\~:text=Therefore%2C%20when%20a%20stutterer%20prepares,hypothesis%2C%20is%20what%20causes%20stuttering.