the same sorta thing happened to me once...
i took a little green pill, and it didnt really hit, only when i got home.
also, wat u said abt ur legs... i find that if i stand still while rushing, my limbs feel kinda wierd.
maybe ur next 1 will be better. try not 2 think abt coming on after u taken it. try forget about it untill ur rushing ur tits off.