I am STUPID person

today i have biology quiz, chemistry class test and English class test...seriously, i hate today...........am i a stupid student or it just a simple mistake that i have done in my life? i think i am a stupid person.....why i can't get good marks for biology............................................arghhhh...stupid10x.....my chemistry is totally unbelievable just now.............why i answered the 10 marks question wrong????????????????????owh gosh......how I'm gonna get 95 marks for final exam? how i gonna get GPA 3.67 and above if my marks not so good.....I'm in a deep trouble......really deep..................................my English class test is okay la...its not so hard and not so easy...at least i can answer.......that's a lot of bad news for me today...only one good news...i got 86 for physics quiz......so happy.....