Crying in the bathroom

I cried in the bathroom when I was bathing just now... I don't know why... Is it because I was in stress and I wanted to release my tension that's why I cry in the bathroom so that no one know and see me cry?? It has been quite long after I cry alone... I never cry in public also.. I had few times I cry in front of my friends in college because the other classmates made me cry... After crying just now, my mood never been good... I'm not having good mood to study now... Luckily my exam tomorrow is 2.30pm.. If not, I also don't know how to do my exam because I still haven't study for my Web Mastering.. What is Web Mastering?? It includes JavaScript, VB Script, HTML, SQL, ASP and some web's programming language lor... Haiz... I also don't know how to die tomorrow... :( Sad...