Been stuttering since I was 3. I need help.

Been stuttering since I was 3. I need help. Stuttering is like a knife in my chest. I am so sick of it, I feel like breaking down. I have been stuttering since I was 3. I don't know why, and I cannot get rid of it. For my entire life, I have been an extremely social person. I love being social, I love chatting, and I despise being alone; However, because of stuttering, I am stuck. Because I stutter, I am blocking myself from any social interaction. It's killing me. I went to so many doctors, instructors, speech therapy, nothing. Absolutely nothing. Same cliche advice; "speak slowly" or "take a deep breath" Non work. All cliche bullshit. For starters, I can speak 3 languages fluently and I am currently learning 1. I stutter slightly in my mother language and in English. However, because I live abroad, I speak a 3rd language and I stutter so horribly at it. And I cannot vent to anyone, either. They all just say "take a breath". I did, what NOW?? So I decided the best place to discuss this was with my fellows. I am not shy, I am anxious sometimes, but I am extremely social and I am confident. However, because of my stutter, it is starting to change. I usually lose almost all of my stutter, then after maximum 2 weeks, I get it back. Another 2-3 weeks with extreme stutter, it goes, then boom, comes back. Every time it "shuffles", I start stuttering on a new letter. First M, then B, then F, yada yada yada. I cannot take it anymore. I need help. Please, any piece of advice you have, drop it. No matter what it is. I have tried over and over and over, and I cannot take it anymore. I feel like there is a literal brick in my mouth because of stuttering.