Can I go into pre med if I'm unsure what occupation I want to pursue?

Most of the courses required for medicine and allied health professions will be in the physical and biological sciences. If these areas interest you it might be a good idea to pick a major which will allow you to take some of these required courses in the course of working toward your degree. These areas of study will allow you a good deal of flexibility in moving toward a career, whether or not you are aiming for a career in healthcare.

I am assuming here that you're not going to enter some of the special combined career programs that usually lead to a bachelor's and medical degree, usually in a condensed program. It is not rare however for a student to actually finish professional school (medical, dental, law) and eventually wind up in a quite different field (and do just fine!), so don't be afraid to try pre-med. Remember also that these fields are quite diverse. There are professionals in health-related fields who are clinicians treating patients, of course. But more than a few wind up in research, academia, industry, or even a combination of the above.
Good luck!