Hesitant towards Speech Therapy as an adult

Hesitant towards Speech Therapy as an adult i’m 21(f) and i’ve stammered ever since I could talk and I went to years of speech therapy as a child and i found it incredibly embarrassing and almost offensive at times. I just hated not being able to read a child’s book the same way I could in my head. I also found the techniques she used counterproductive for example she’d say “you’re talking race horse right now slow down” or “let’s do tortoise talking” I don’t know if i was just a mature child but it felt so passive. She also told my mom and dad to interrupt me if we were in public and tell me to “tortoise talk” if i couldn’t get the words out. this led to years of embarrassment because they’d do it in a room full of people. Anyways, as i’m 21 i’ve always had this burning desire to teach, and I have just graduated and have the degree so im aware I probably need to go to speech therapy again as communication is a massive part of teaching i just can’t stand the thought of it. Also every time i research speech therapy in my area it’s all for children… does everyone just expect stammering to be a child’s thing that everyone grows out of. Anyways. I was just wondering if anyone has had similar experiences and is also hesitant to returning to speech therapy and if so what did you do differently to return if you did?