How to deal with my Mom?

Mom is a person who gets mad in 2 seconds!! Today in the morning, I woke up, and I felt like my bones were broken into pieces!! And I was damn tired! And my throat was hurting me a lot!! So I sent mom a piece of paper saying, “I don’t want to go to school, and I’m not dressed!” And I went to the bathroom (cause I need the bathroom!!) and she read it, then she got mad! She came and she started talking to me through the bathroom’s door!! she said, “I need a good reason” and I said, “if I go to school they will bring me back home” then she said, “and why?” I said “cause I will cry at school if I go” she said, “thats not a good reason” and was quite quite and quite! And she was telling me that school’s not a game and stuff like that (I was quite) then she got out of the room and she closed the door strongly!!! And then I went back to sleep cause tired! And she went to work!! And I woke up later on, I found myself sick!! (flu) And I throwed up when I woke up! I called dad at his work and he told me to rest and stuff like that… Here’s my problem: I really don’t know how to face mom after what I did!! Cause I was wrong! What should I say when she calls? (dad told her that I’m sick) but still, what should I say??!!! I’m so sad! And I have a super strong headache!! And I cried a lot today! What should I do?!!