Or you can follow a nonclinical route in research or even hospital administration.
Pick a college that suits your personality and a major that interests you. You will need to get good grades in college in order to apply for medical school. At the medical school I attended, the average GPA is reported to be 3.85, so even one or two B's can hurt your chances of acceptance.
Aside from this, any major is acceptable as long as you complete the prerequisite courses.
Typical medical school prerequisites include:
Biology: Lecture – 4 semesters; Lab – 1 semester
General Chemistry: Lecture – 2 semesters; Lab – 1 semester
Organic Chemistry: Lecture – 2 semesters; Lab – 1 semester
Biochemistry: Lecture – 1 semester
General Physics: Lecture – 2 semesters; Lab – 1 semester
Math: Statistics – 1 semester
English: Rhetoric (Composition) and Literature – 2 semesters
You do need to go back and complete the pre-med requirements. These include at least a year of biology, 1 year inorganic chemistry, 1 year organic chemistry + labs, physics, calculus, and biochemistry. You will need to take an MCAT study course prior to taking the MCAT. With a solid GPA and MCAT score, you should be a competitive applicant. Also, med schools like to see that you had previous job experience. This could help your application rather than hurt it.