[adpiucf]

No harm in trying informal or seeing if any of the chapters now still have spots to fill. I don't know what campus you are at, but with 5 sororities, it doesn't sound quite cutthroat. I wouldn't worry about the chapters you cut after prefs. Some sororities may have a cut once, cut always policy, and others may not. You can't concern yourself with that. You can only put your best foot forward.

Keep your grades up, make friends in the sororities, get involves on campus and don't embarrass yourself socially in real life or on Facebook. I can't tell you what your chances are, but unless you have a ton of friends pulling for you in your number one choice that dropped you before prefs, it's probably not going to happen there. You'll have a better chance with the others.

No one knows why you dropped out or if you were extended a bid. They could have assumed you ranked another sorority higher, or dropped for financial reasons, family emergency, medical emergency, etc.

If anyone asks why you didn't pledge this spring, keep it short and sweet. Just tell them things didn't work out as you hoped, but you're excited for the opportunity to go through recruitment again and very much want to join a sorority. Then compliment their chapter and and ask them questions about their experience as a member. If you're at a recruitment event and you are interested in them, tell them! They don't want to waste their time extending bids to people who aren't going to accept. It's like dating. Put yourself out there, but don't be awkward or creepy about it.

For now, call the office of Greek Life in the morning and tell them you didn't pledge but you're interested in being considered by any sororities seeking to add additional new members in their spring class. See if there's an opportunity.