Volunteering...Nurse or Music Major?

Tomorrow I begin volunteering at a hospital for the summer! I am really excited about it because I know God has called me to do this...however, I am kind of nervous. I hardly know what to even expect. I'm just praying that the Lord will give me confidence and peace.
For the past couple weeks I have been going in and out of the hospital for TB tests and readings....which has actually been pretty fun to be honest. Every time I was in the hospital, I just felt like that was where I belong. Almost my entire life I wanted to become a nurse. Of course, every once in a while I would change my mind - later changing my mind again back to being a nurse. It's only been the past year I felt like I was supposed to go into music. Now I am not so sure. I just keep feeling that being a nurse is something I need to do. It really didn't dawn on me until recently that I could always have a minor in music. Because I still feel like I should do something with music. The signs that I needed to go into music that the Lord kept showing me in the fall, now seem to be just that God was telling me I should not give up on my musical abilities, and that I should have a minor at college in music. For some reason I think I took a little too far, by assuming that He wanted me to have a full major. I just don't know yet. Once I start volunteering, I should get a pretty good idea if being a nurse is really something I want to pursue.
Right now I just need to pray and ask for God's wisdom, and that no matter what I decide, He'll still use me this summer at the hospital to encourage people in the Lord and maybe even lead some to salvation in Christ!