Well, now you can use that time to:
A. Join other groups/clubs (some sororities require membership in at least one other activity
B. Meet sorority women as friends without the pressure of recruitment. Classes, dorms, the library, the cafeteria are all great places to make new friends, period.
Two pieces of advice (I don't know you and would advise this to any new student) - be careful if you are attending fraternity parties and the like, because you don't want to have a rep as a hard-core partier, or someone who's too friendly with the boys; and when making friends with sorority women, don't let that be the focus of your conversations.
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