Concern about Future,,,

This semester is almost over. It is going to summmer.(not exactly! still little cold!)
I feel so nervous about my future in these days. Because I'm not young any more compared with American student. I am a non-traditional student-!!
It is a common thing in Korea, but I changed my major when I came Ball state. As I changed my major, I have to take more courses than the other students to graduate.
I am taking sophomore class even if I am a senior cause I transferred lots of credits what I already earned in Korea.
I need three more semester to graduate. I already finished most of core curriculums, so I will attend just major courses. It will be hard time. However, there is an important thing. That is what I did not decide my major yet.
I am taking a pre-business courses, because my uncle recommened finance. I planned to choose a finance as a my major, but my advisor told me another choice. Actually, I have a plan to get master and doctor's degree in America. My advisor told me, "if you want to keep studying after graduate, how about choose information management or economic as your major. Cause you don't have to learn same major in the undergraduate and masters."
I am very confusing now and it is hard to make a choice because it will be a great influence on my life.
Anyway, I have to make a decision as soon as possible. What could be my best choice??