HELP.. Stress

HELP~ anyone can help me? I m very STRESS now... feel like wanna cry - - why tis kind of subject can make me so stress.. It is juz a simple subject, but i dun understand why ther person make it like so hard... Everything is last min... Quiz and presentation last min... Din teach oso can come out in quiz.. Help !!! I dunno how to face it tomorrow... 1 Essay, 40 MCQ and dunno how many short ans... juz 2 hour wan ppl do so much of things.. wan our life? wan to see me die = = how come dun hav any tips... Other harder subject oso give tips... Wat kind of subject is tis? GRHHHH