I had my worst stuttering experience today

I had my worst stuttering experience today Today I had to present my thesis work in front of my teachers and whole class for my masters degree. I was 70% confident that I will do good because I have been practicing from last 3-4 days continuously what I'll say during the presentation. While practicing alone I was fluent with my content I could easily articulate whatever I had to say. But today when they call my name to present my thesis work I panicked and couldn't breathe properly. I had a huge block when I was speaking about my topic. I got into the flight mode where I just wanted to speak all at once very fast. I was not aware what I was saying I was freezing at every sentence and every word. Somehow I finished it up, then my teachers begin to ask questions about my work and I couldn't even answer a single question properly my mind went blank. All I wanted that time was everything to just stop so that I don't have to deal with any more embarrassment. Then finally my presentation came to an end after the longest 30mins of my life. I am feeling really low right now I feel like I just can't deal with it no matter what. Also thinking about my career choices and whether I should change my career line or not. It is such a major setback for me because I am not a severe stammerer and I've been taking part in various online meetings, mock interview and successfully speaking there which really built my confidence but after today it feels like I'm back to square one feeling absolutely zero confidence right now. Please suggest how do I deal with it. English is my second language so pardon