It’s great that you’re thinking of a career in the medical field but as @WayOutWestMom already pointed out that isn’t enough to conclude you should become a doctor.
In addition to medical physics already mentioned, some of the myriad medical careers include physical therapists, radiology techs, perfusionists, speech pathologists, physician assistants, nurse practitioners, to name but just a few as shown on http://explorehealthcareers.org Careers that pay well and take less than 11+ years of education and training plus the immense debt incurred when becoming a M.D.
Until you’ve carefully considered the alternatives and have first-hand volunteer experience I suggest thinking of yourself at the stage of considering medicine. You can start this summer with volunteering at a hospital or clinic in your area and then work with the career center at college to figure out what’s right for you.