I feel you, i really do, its so annoying that i quit university cause of stuttering. i remember my first semester, English class, professor asked my name and i just couldn't say my name, everyone was looking at me in weird way, i was literally feeling the sweat dropping from armpit. I  didn't a do single presentation in my 12 year of school and 1 and half years because of stuttering. its so annoying but i just live with it. i avoid many events and gatherings. writing this after i couldn't say my number at the hospital. Please don't be sad, there is always good in bad.