Telling my parents that i'm depressed?

[vansrcool@sbcglobalenet]

I think i'm depressed. I did a lot of research on it, and I match the symptoms. Because of everything i'm going through, I've had a lot of trouble this grading period. Tomorrow is the last day of the grading period, and I will probably be up until 5 am finishing my makeup homework. I probably won't be able to finish my work, and will have very low grades. I really really really want to tell my parents so they'll understand. But I don't know how. Please help me.