G0dd3ss: that happens. BUT! it's not the end of the world. I changed majors 2 years into a 4 year degree and had to start all over from the beginning. my new roommate's girlfriend, on the other hand, didn't decide she didn't like her career path till she was out of school and done it for like 6 months. her solution? get a Masters in something she's more interested in!
she's currently finishing up (don't ask me what she's doing, I'm not sure!!), and to listen to her talk, she has NO regrets.
moral: you never screw up, you just take detours in your life.
good luck finding what you want to do!