I'd say, go for it.
Don't make a big deal about being married, but do wear your wedding ring... if a particular sorority has a rule against married women going through the "normal" new member process, they will notice your ring and cut you... BUT, after going through rush and meeting women in each chapter, if you do not receive a bid through formal rush, you may find that one or more chapters is willing to sponsor you as an alum initiate, and you'll have a better idea which one org to pursue for alum initiation. As an alum initiate who's still a student, you'll be able to do a lot of the things an active would do, such as participating in philanthropy events, participating in ritual, and going to formals.
I also disagree with the practice of not allowing married/pregnant women to join or to remain active. Sometimes I think the Divine Nine have it right...