whatever you decide to do, i would wait at least a month so you know for sure you're thinking straight when you make that decision. if its meant to be, she'll still be there. its real tempting to go running back to her when now you're all alone and not used to not being able to turn to her for support. dont be so quick to decide that it was a terrible thing. it still could be a bad thing in a month, and if so THEN go back and try to figure shit out.
good luck man, you'll figure things out.