You're fine , friend . I can completely relate to what you've gone through. Usually , when I go through those panic moments ,I just reconcile with myself after that because I realize that I'm the only one who's still thinking about it and no one really cares about that damn stutter! I just think of what's next , at least you did your best. The one who made fun of you doesn't deserve your time , he must have troubles with himself for mocking someone who's having a struggle.