Same. I also feel my brain bursting.. if my subconscious is not ready to speak fluently and I try to do it anyway. so, my vicious circle looks like this: 1. subconscious is not ready to move the speech muscles (*e.g., because my subconscious wants to experience that 'safe' image of myself stuttering, or wants to normalize or tune the status quo between the defense mechanism and my negative expectations of myself stuttering*) 2. defense mechanism increases too high 3. my subconscious evokes pain resulting in fainting 4. my subconscious reduces the pain (and fainting) by stopping the execution of speech movements (result: I stutter)