MrBond is right. Take time to do you. College is a great place to Get A Life. I know b/c I spent 7 years at 4 different colleges to get a BS. There is always some activity like a movie, or magic show, or live music, or intermural golf, basket weaving. Whatever. Just do something.
Find a study buddy or a study group in one of your classes.
Take MrBonds advice, turn the phone off. You are not ready. Nothing good will come of a D talk now. You will not change her mind today. MC will not change her mind today. There is no quick fix. Talking is not the answer. All of your talking has just sped things right along hasn't it?
Take this time. Regroup. Find yourself. Start doing for YOU.