Speech Block and Stutter leads to Social anxiety *my experience*

Speech Block and Stutter leads to Social anxiety *my experience* I am 15m. I had different kinds of stuttering through childhood. Although I can and I am speaking normally in certain situations, with my family or with certain people. I don't like that i have this disability, i would say that i am extrovert who is stuck with speech block. There has been period few years ago where i didn't have stutter at all nor social anxiety. That was heaven, it felt like freedom. I could ask anything in classroom, i could talk to anyone, etc... Now it's different, even going to bakery is sometimes problem. I kinda think speech blocks are worst type of stuttering. It's basically when your whole jaw is blocked and you can't say anything, not just that but you also have to move your head to position where you have to strain, also your stomach starts to hurt. Speech blocks doesn't hurt just mentally, but physically too. And that's where you start to become socially awkward and introvert. Here are questions i have: 1) Can stutter disappear? 2) Is there things that will help me overcome stutter blocks?