It's normal to worry and to be concerned about your future. I know I felt that way when I was finishing my freshman year.
Focus on deciding on a major you like and that will stimulate you to want to learn more. You only get one chance at undergrad; you might as well spend it learning things you enjoy.
What's important is that you take time to reflect and do what YOU want to do. Don't worry so much about what degree you bring into the PT admissions process. I was a musician before going back to PT school, and things worked out for me. In my program there are lots of different backgrounds. One is a returning student who was an IT specialist for 10 years after college. Another was a professional juggler. We've got some massage therapists, some neuro and bio majors, and the occasional kines and psych major. It runs the gamut.
Chill, hang with your friends, play and study hard. The decision will make itself if you give it time to percolate.