There is no reason for you to feel guilty about the way you feel. Although you were raised up in one faith, you did not chose that faith, it was chosen for you by your family. If you do not agree with the teachings of that foundation and feel a stronger connection to Wicca, my suggestion is to follow your heart and soul. You are drawn to it for a reason. I am of the opinion that if you live a moral life, are a basically good human being, and do you best to live by your convictions, it should not matter what religion you are.
Being confused is a natural part of being young. What am I saying, I've got a strangle hold on 40 and I am still confused about a lot of things, religion being one of them, hence, why I find myself here.
I hope you find your path. Do as much research as you can. Learn, learn, learn. In time, you will find your way. It is all about the jouney, not the destination.