Stuttering is ruining my Life

Stuttering is ruining my Life I am 17 years old and majority of my life till now, I've gotten bullied all my life. I'm the head boy of my school and today I fumbled in giving command and speech. I can't talk to people, i can't have conversations, I can't order food by myself. It's mentally affecting me hard. All my friends tease me. Please help me. I want to stop stuttering