you probably got some amphetimine's soemthing like meth or stronger...and yes there ios some superkrank out there that can be passed of as e and shit..........
I got some bad shit before that was supposed to be e and it was like speed from hell....was up 2 days,.....i was so fucked up that i hit my head on something and i remembered it but it dsid not hurt.later tree days later i found a two inch cut on the top of my head......wasn't drunk either ....but i was sooo fucked up that i had to breathe a certian way for like twelve hours or else i felt like throwing up..........damn i really hope you are ok man...i have been to that kind of party and i don't accept ther einvites anymore.....if you keep takin e maybe you should get a e test kit online ...they are pretty cheap and you ccan test your pills to a certian degree the shit's fast i think .........GOOD LUCK