anyways thanks for your suggestion! : )
i tried to contact itunes and luckily they answered me really fast, it appears that it's a common problem, thank god it is or else i would be killed by dad! =P
they gave me a bit long steps to follow and first of them was signing into itunes using my ID, it sounded the easiest step at first but then another problem came out lol it keeps saying that whether my account or password is incorrect. although i reset my pw but nothing changed! i sent them another email hoping for a better answer. *waiting*
i'm super out of luck this weekend! ._."