Wanting to join a conversation but can’t

Wanting to join a conversation but can’t It really sucks when you want to join a conversation but you mentally and physically can’t. I have the words in my head and I know exactly what I want to say but my body’s ability to talk just shuts down. If I try to join the conversation I will just make a fool of myself and my face will get all red. I want to talk to people. I don’t want to be known as the shy guy. For fucks sake I stutter on my own name. Introducing myself is a nightmare. Do any of you guys stutter on your own name? I don’t know how common it is because I never met someone else who stutters besides my brother. I want to be extroverted but my stutter is holding me back. Thoughts?