Help! It's the last day of the class and I can't take the final!?

I'm taking a class online this summer with my state (I'm in high school). The teacher had a pacing guide set up and I was following it to a T, so today (the last day) is when I'm supposed to be taking my final exam. The problem is, I need to know a password to access the exam, and I don't have the password. I called the teacher twice and left a voicemail but she's not picking up, and she hasn't been online for a day so I doubt she'd see the message in time. What do I do?