What happens when you drink fruit punch that's been open for over two months?

My dad pulled a bottle of fruit punch that's been opened for over two month from the back of the fridge to give to me for dinner. I pretty much passed out from exhaustion after dinner, and wake up feeling sick as hell. Could I possible have contracted some bacteria from the juice? If so, what type?





Thanks.|||...if it was refrigerated you should be ok!!!|||First check from fruit punches expired date if it has not expired and it was kept in the refrigerator, should have no problems although fruit punch already opened two months and kept in refrigerator