Keep in mind that some of those 250 may have decided that they just didn't want to go greek at all. It doesn't mean that all those women were dropped or didn't get bids. Some may have had their minds set on only one chapter and if they were dropped from that chapter, they dropped out of recruitment. Some may have decided it was just too time consuming to join a time intensive organization at an academically competitive school. Some may not have made good grades first term.
Focus on your grades, keep meeting new people and being involved in other things on campus, be yourself during recruitment and see what happens
Good luck to you!