Decisions don't make themselves. You're on a time-limit here and you need to get your life sorted out. There's only about a week until you go back to school and if you haven't made up your mind by then, you're not going to have any direction at all. You'll be stuck with the shitty schedule of half-assed registering and you'll be more than a semester behind if you don't take a full, productive course load. I realize that you can't properly register without knowing what you want to do, but sitting around dreading it isn't going to solve the problem.
Get your act together. You're supposed to be an adult, start acting like one.