When I was young, I expected my stutter to go away at some point. When I realized this was a lifelong condition I was about your age in high school. I also got very depressed and was actually institutionalized 3 times after attempted suicides. After many years of both speech therapy and counseling, I learned some techniques to help me deal with it but I do still have days where I just feel like "fuck everything" when someone teases me or is disrespectful about my stuttering. I have a feeling that one day, someone will make fun of me on the wrong day and end up with a broken nose and/or jaw because I will just lose it. I know you will hear this a lot but being a teenager blows. No wonder you feel the way you do! Being a teenager is hard enough on "normal" people but you have to deal with a stutter too!! I also did not have many friends in school and I stayed home on weekends. Now I have about 5 friends I see regularly and I'm 38. It's not about quantity, its about quality. I suggest you dump any "friends" who are making fun of you. It's not out of love. It's out of being an asshole and you don't need that in your life. My life got immensely better when I dumped all of my toxic friends!