I have to say this certainly isn't uncommon. There's been times in my life through adolescence and also because of trauma or heartbreak that sent my speech into a free fall. I would avoid talking to people and wouldn't do anything to help my situation. Speaking from experience this cycle will only continue until you are proactive and do something about it. It's easier said then done but you have to change the trajectory of your life. You can do anything man just put your mind to it and you'll be good. Best of luck to you.