I can't think of school without getting super anxious and scared?!!?

I'm on vacation and haven't been to school since last Friday and it's Friday night right now. I've had one week off from school (February break) and my teacher assigned a 2 minute oral presentation on the day we get back. I'm horrified as it is to even go back, but I can't do this project!!!!! I didn't know we were supposed to read this book, no one did he didn't assign it, and I can't talk in front of people without notes. I barely can when I actually know what I'm gunna say!!!!!! It's 2 AM and all I've been able to think about all week is school and my heart beats so fast and I can't breathe and want to ******* cry when I think about going back in less than 2 days. I'm a sophomore in high school and I basically stayed in all week long because my parents work all day and I don't have a car, just my permit. So I did nothing to take my mind off of school which is haunting me as we get closer to Monday. I have issues with going anyway but never this much. I really really can't do this presentation I'm about to cry whenever it's on my mind I can't do I really can't. I don't know what to do I've been feeling like this more and more everyday and now it's Saturday and I can barely function oh my god I can't go back!!! It's already Saturday I'm trying to explain the feeling I get when I think this it's horrible please help me I don't know what to do or why my ******* teacher assigns this the day we get back from break!!! please help me I'm really freaking out I can't stop help me :(