I FEEL SO TIRED, AND MY CRAMPS ARE KILLING ME

my cramps are killing me, i'm feeling so tired and weak. and im like practically dying!!! I HATE MY PERIOD!! I don't know how and why do I suddenly get all the pain, I used to not have it at all. Now it's like EVERY SINGLE MONTH which makes me so annoyed (which might ignite another argument with clement) that I feel like staying in bed and not talking at all :( 

I thought that it was the lack of exercise, BUT I've been dancing, and working out a little, it's MUCH MORE than the usual PE lesson I had in Secondary School, and my cramps din go away :( So what are the causes of cramps seriously. 

Why are they soooooo ANNOYING!!!! *angry face* 

short post before I go out and meet my boyfriend. BTW, do you guys think that I should bring my lappy today? I feel like playing maple at his place later, and sharing comp with him is like .... FOREVER!!! :( you can just die you know!!! :( dilemma