My Parasympathetic System is Not Working!

It's the last week before finals. I have not studied for any of the six exams that I will have to complete by the end of next week. I am dealing with angry forces in my apartment. I lie in bed at night, obsessed with negative thoughts. I can't focus in class or in my study because I am too sleepy. My bowels are not moving as they should. When will my parasympathetic system work again? After finals...perhaps? That would be too late. I don't know what a mess I will be by then.