calm down... it's going to be okay.

The only thing anyone can do to help you is to encourage you to study. If you're not sure what to study, ask your teacher for a study guide. Ask your friends or parents to quiz you.

There are many methods in which you could cheat, but I seriously don't recommend them. The time you take to prepare something you could get caught with would be better used to retain this knowledge.

You can do it... don't be so nervous!