Do you know what you wanna do? If you do, good. Get into a college that has a great program for you. If you don't then I suggest maybe a Liberal Arts college because the institution forces you to take a huge variety of classes and thus it's easier to find what you're interested in.
For the sake of example, lets say you really love English, especially during the Victorian Period. Find a college (if you haven't yet) that has a good amount of classes that you would enjoy taking in that major. Apply, get in, get some scholarships (or maybe a free ride!) and get settled in. Now, once you get to college (and here's the important part), meet with the schools PRE MED adviser, NOT your freshman adviser. In my experience (I was an RA in college, so really I had to deal with freshman advisers twice), they only care about the paycheck and to get that, they are told to persuade freshmen to take all of your prereqs first and put premed on the backburner for junior year, which is very costly. Your pre med adviser has dealt with literally thousands of students from all different majors that want to go into medicine. So if you're an English major, they will really help you with how to juggle volunteering, research, your major, minor, premed classes, etc. I cannot stress how important a pre med adviser/program is. They will save you thousands of dollars and give you sweet deals that they have with major MCAT-studying programs (such as Kaplan or TPR).
I won't waste too much space telling you what others have already said--college is about exploring you. You wanna join a club on glass-making? Do it. The next 4-5 years of college for you will provide opportunities that you will probably never have again. The undergrad physiology course that you are looking at to "prep you for medical school" won't do anything. My semester-long physiology class was hard, but what I had learned in a semester didn't compare to what I had to do first semester of medical school.
The workload? 1st ring of hell. College was hard (Biochem Major reporting) but I delegated my time with free time to hit the gym and hang with friends every other day. Medical school is a sacrifice. This is pretty much the first actual step to my career in (possibly) being a Navy Physician/Surgeon for the rest of my life.This truly is a lifetime of school, learning, dealing with bureaucracy, handling family, and fitting in a life outside the career.
When you come back here on the pre-med "What are my chances?" threads to post about your GPA, ECs, etc. don't be deterred by the responses that say "even DO is a long shot" or "take a year off to do [x] or [y] THEN consider DO schools." We aren't trying to get you out of medicine. We really just want you to be the best applicant you can be. [Here comes a small personal story, skip if you'd like: ] I came on here 4 years ago with a different account, posting my stats and asking "Where should I apply?" Almost everyone told me "stick with DO or go to a postbac and maybe apply to MD schools." Not liking this, I finished my junior year with a 4.0 both semesters with research on top of that. It rose my GPA up quite a bit and applied to ~20 schools. I got 5 interviews and got accepted to 2 different MD programs. Currently, I am starting rotations in 2 weeks and am almost at the top of my class. [End personal story]
OP, in short, you have a bunch of time and I wish I were in your shoes because college is so much fun if you make it to be. Or, you can make it hell with trying to be this neat "copy&paste" premed students from the AAMC website that honestly, most can't keep up with.
