I would stick it out. At least for one more semester, and see how it goes. If you were that unhappy, I feel like you would have dropped already, probably before initiation. There is obviously something there you like.. and thats what made you stick with it thus far. Maybe you will become closer with the girls and have a better experience this upcoming semester.. your bonds will definitely get stronger now that you're truly sisters. I never really, truly felt at home in Zeta until my sophomore year. I had a few doubts, but I stuck it out and to this day I am SO GLAD I DID!
Since you are already initiated, I wouldn't give up on it just yet. Sorority life has so much to offer, and you might regret it if you make a decision to drop out. Like other posters said, weigh out the positives and negatives, literally writing them down and looking at them really helps. That's how I make tough decisions. if you need someone to talk to and are afraid of talking to someone in your chapter, I think a Rho Chi that you trust, thats in another sorority, would be your best bet.
Whatever you decide to do, its not the end of the world either way
good luck and feel free to Private Message me if you would like to talk!! Zeta love and mine!