I Smoked K2 Earlier Today Friends Called It Bizarro.. Anyway

I smoked k2 earlier today friends called it bizarro.. Anyway after 5-10 mins I was in the cafeteria and litterly Everyone told me I was super pale like unreal pale.. I went to my 6th your class and was freezing like feverish type freezing.. It's been about 12-13 hours and my heart still feels weird like its not beating right? Any help would be great!