No worry!  Even in college you won't know what you want to major in.  The average college student changes majors 2 times in their college tenure.  Just start to think about what types of things you enjoy and could be hapy doing as a career.  Do something that will make you happy.  You spend more time at work then you do with friends and family so be sure to pick something that you enjoy and puts you around people you enjoy too.  Good luck!