exam numbness

my first paper's a day away. yet i dun feel panicky. in fact, i dun even feel anything. no nervousness, no anxiousness whatsoever. not even dread. while everyone is mugging so hard, here i am taking my own sweet time flipping thru stuff. reading thru notes n tutorials that i cant even recall after 5 mins. my mind's a total blank. n i feel totally slack. why do i feel this way? i jus feel so lost... i dun even feel like i have studied at all. i recall during my O levels, before a paper, my brain will feel full and almost bursting n i cant wait to regurgitate wat i've crammed in my head. it was such a wonderful feeling.. better than now, where my head jus feels empty... super empty... *knock knock... no one there*... i cant even remember any formulae nor any methods of solving the qn... everything's on the helpsheet.. n i jus feel lazy to do anything else. change the style of the qn, n i wont b able to solve it anymore. argh.. why am i like this? i dun even noe how to prepare for this paper. yet im still not panicking.. can someone whack me please? argh...