Sleep deprivation help!?

I haven't slept for 2 nights in a row and I'm really active during the day. My parents don't know because when I bring this stuff up they think I'm asking for attention. If I finally fall asleep during the day they wake me up :( they think ive been staying up on purpose. I can't control it! Right bow, I have bad cramps. I did yesterday, too. But it IS that time of the month.. :P my reactions to to things have been really slow. I meant to say "it sounded like he said..." but first I said "it tasted like he said" then "it smells like he said". So I can't understand my only language!! I read on a website that a human can go 11 days without sleep before death. But I'm 13 so it might be less fir my age.. So since I've been up for 2 days I guess I'm 1/5 dead? It sure does feel like it. Whenever I walk I feel like a ghost? O.o idk I just feel like I'm really light... And I'm VERY clumsy.please tell me what I can do?! :'(