Do you guys anticipate how talking in front of others is going to go so much it drives you absolutely crazy?

Do you guys anticipate how talking in front of others is going to go so much it drives you absolutely crazy? With me it’s so hit or miss I never know when I’m going to completely stutter over everything or smooth sail. I never know which it’s gonna be so I sit for hours going over and over the whole situation and how it’s going to play out. My anxiety gets so bad I make myself sick the night before. Like right now. Tomorrow I have to speak in front of the class. I’ve know I’ve had to do this for a good 4 weeks now and I feel like I’m getting executed tomorrow and tonight is my last night alive, if that makes sense. I know I’m making it a big deal because i don’t even have to say that much but I’ve over thought everything to the point where I’m acting like I’m giving a 5 minute speech when I maybe have to say a total of 3 sentences. It’s making me sick. This will probably be the last presentation I ever give as a high schooler thank god. I just know as soon as I walk into that room my courage is gonna falter and I’m gonna start to freak out. No matter how much I tell myself to calm down. The kicker is that it’s not a huge deal. I’m just making it one. This will be the last time I may or may not make a fool out of myself. It puts so much stress on my body it’s insane. My body is telling me to flight flight flight. I have to coax myself to fight when it comes to public speaking. after this, I am done. No college presentations for me. Nothing. I’m tired of this feeling. I hope tomorrow goes by quick. I hope it won’t be as bad as my mind is telling me it’s going to be.