isolating myself cus of my stutter

isolating myself cus of my stutter basically, as the title says, I recently for the past 5 months have not been speaking much to anyone in school or calling anyone because of my stutter, like I can't risk talking to anyone and have them finding out I have a stutter, and even last week, I think a girl wanted to talk to me in class, and I just nodded and made her look dumb because I was too scared to respond, It's honestly ruining my life, and I can't see a way out of isolation