failed in exam T.T

yes..i failed in my chemistry exam..which is my most important subject ever ..
i'm so terribly down..that day..
i even cried for a night..one whole night..
how could i let myself failed for that subject..
y am i so dumb..T.T
i shouldn't do that..n i can't!!
i'm so afraid to take another exam now..
btw..i'm fine now..
just to make sure that my friends won't so worry about me..
i'm fine guys!!! ^^

hope that this bad thgs won't happen to me anymore..
don't fail anymore!!
no failure is allowed in my exams!!! not even one subject!! never!