Editing Application

So I applied to Duke and I indicated “No” when it asked whether or not I wanted an interview because I was under the impression that interviews were only for people who had to clarify parts of their application but then my friends told me that interviews are so that you can learn more about the school and so the school can learn more about you. I really wish I had said yes because Duke is one of my dream schools and I’m really worried. Would it shine a bad spotlight on me if I emailed the admissions office and explained my situation??