Difficulty in Picking a major

Well, this is my first semester in college, and to start I decide to pick Criminal Justice, but I’m not sure if I want to pursue that. So I was thinking in taking this major for now and then when I finish this spring semester if I like it stick with it or change to another one. Is that possible? Because right now I’m 18 and I’m thinking a lot and I’m not sure what to do in this situation. What you guys will do in this situation?. It’s sucks to be straight out of High School…