Anyone left out to dry? I am...

Its a really long story, my girlfriend left me last night. we used to fight a lot, but we got better and we had a discussion about college a week ago and she thought it wasnt going to work, but we had talked it over and we were fine like we came up with a plan and it was fine. but last night i was on my way home and i talked to her and she ended it.. because she has a lot going on. we have been dating for 2 years and ive spent every minute with her.. but these excuses are not making any sense to me..she flip flops all the time but its not like her..yeah were young but it still is killing me..it didnt hit me until today what really happend..it would have been different if i had known this was comming..i dont know where to turn anymore..i keep gettin sick.. i need to know what else to expect..