Pre-Med isn't a major. It's a rough path you take towards applying to medical school.
Medical schools require matriculants to meet the following criteria class-wise (more or less):
1 year of Biology
1 year of Chemistry
1 year of Organic Chemistry
1 year of Physics
Lab for all of the courses above, but chances are it'll be integrated somehow.
Depending on the school, some may require more sciences. Ohio State requires anatomy and I know USC requires Cell Bio - so it'll be something along those lines.
1 year of English
1 year of Calculus
What this means is you can major in whatever you want, as long as you fill out the minimum criteria. Of course it's easier (that is, straightforward) if you major in a science, but it's not unheard of to have music, history, international studies or other majors end up in medical school as well.
Talk to your school's pre-med advisor as they will know more about what your school has to offer.