Quote from kcalohagirl
Hey there! My first degree was in music. I was a vocalist who ended up getting my degree in music history. (I had delusions of going on to get a PhD.)
If you change that to an instrumentalist, then you have my story
I absolutely loved music and wanted to have a music career, but always had this nagging doubt in the back of my mind that it wasn't for me. I also kept wondering about nursing, but kept doubting the reasons that I was interested (the nursing campus was nearer to my boyfriend, there were more job opportunities for nurses than musicians, I could get a job earlier as a nurse than as a music academic, etc.).
I would advise you to look for a way to see what nurses do, hopefully by shadowing one at a local hospital or clinic. By the time I was in college, the only actual nurses I'd interacted with were my school nurses. I had no clear idea of what nursing did outside of that setting. I wound up doing a lot of ICU settings, so the fact that school nursing didn't appeal to me wasn't a good indicator of whether or not I'd like it.
Depending on your musical goals, it is certainly possible to do both. I've played in community and church groups and sung in the church choir. Sometimes it can be a challenge depending on your schedule, but usually you can make it work.
I would basically just carefully weigh your personal reasons for wanting to change. Just as a personal note, I know of many many people who have their bachelor's degrees in music who are doing things totally unrelated to music. Either they didn't like it (?), couldn't find a job, or wanted to make more money. They are lawyers, computer analysts, teachers, and secretaries. The funny thing is, many of them thought I was a little silly for "giving up my dream" but I have a steady job that I enjoy, and that's very important to me