Your major(s) should have nothing to do with your chances of getting in to med school. What does matter are your grades in your major and more importantly, your grades in the pre-reqs you need to take before applying. Also in there are your MCAT scores, your personal statement, and very importantly, your extracurriculars. Your non-science double major is the least of your worries. Focus on graduating and then tackling those post-bac science courses, the MCAT, and clinical experiences!