I Have Anxiety

I'm pretty worried for tomorrow. If you guys don't know, I'll tell you. On Friday my schedule for classes was switched a little bit. I had new teachers for U.S History and American Literature. But on Friday I had gotten called down to the office and was told that I had missed a class. That's when I found out about the switch, and nobody told me about it. So I didn't get to have history that day because I had to go to my new literature teacher. Bad part was that I had questions on the assignment in history and my teacher of record doesn't know if that classwork applies to my new history teacher. So they told me to just hang on to it until Monday, so I left it at school since I did most of the work (and what I could do). But dad got mad at me because I didn't bring it home. He knows about the switch, but he said it was the fact that I had the work not finished and that I would be grounded from the internet if he sees I failed the assignment. I was upset because-how was I suppose to finish my work if I didn't know one and half of a question they were asking me? I just hope that my new teacher will answer my questions if the assignment does apply to his class tomorrow. Cause I'm really worried about it, I don't want to do bad on my first assignment that's for a grade honestly.