What kind of experience is it to oversleep on the day of an important exam?

I feel better now. The accounting exam started at nine o'clock today. I overslept and woke up at nine thirty-seven. I set the alarm clock, but I didn't wake myself up. When I woke up, I was petrified in an instant. I thought I was still brushing the questions the night before. I've been preparing for a week. Because I haven't read three books and I don't study accounting in college, I have worked hard this week. I saw it at 3 o'clock in the afternoon for several days, although I may not pass the exam. I had a really hard day. I killed myself.