I did not. My courses didn't require lots of presentations. I skipped lots of the presentations I had (losing their grades). The few I did went horrible, all of them. I was stuttering like never before in my life. One of the professors once stopped me and said don't worry, we are here to hear what you say and we care only about what you say. It turned out that is what they really did, I got good grades in them even though I had trouble saying my name at the start of all of them. It has been 6 months now since the last one, I don't think about it ever again, every time my mind wanders to that time, I immediately distract myself with something else. So yeah, I was standing there in front of people stuttering in every word, blinking and making weird faces. You eventually forget, and you don't care anymore. I advise you from someone who went through that hell, go anywhere in your community or online (with your face visible) and give a public speech or something, try not to hide it, if you find yourself speaking fluently, stop, and try to stutter, you will find that no one will care, even you won't care afterwards. Go back to college and study what you love. Trust me it's not worth it.