I'm going to continue to be upset
Why are you so against just letting it go?
My exams start this week and I haven't done enough preparation
I understand, it's normal to be upset about things sometimes. But you should start studying so you aren't stressed anymore.
Why are you telling me this? You even know that it's not going to work.
I think that you should just try to calm down. I think that it is okay to be upset but you should not let it effect you that badly.