My Mom Says This Is PMS. What Do You Think? If So, How Can I Make Easier?

Okay the past few days Ive been getting a full 8-10 hours of sleep and today after school i crashed. Ive been having cramps off and on. Ive been really hungry and i dont know why. I was very snappy at people when I got home. I didn't want to be bothered now Im like trying to stay awake to finish my project. (I am a virgin so that eliminates the pregnancy thing) and my period is due anytime next week. Is there anything I can do to keep me awake and control my attitude before it gets me in trouble? I have a good hold on it, I just want to see if theres other things I can do.