How do you know...?

Hello! I'm a brand new nurse still on orientation, working nights on a med/surg floor. Unlike many of my former classmates in school, I didn't mind the idea of starting my career out in med/surg, and even though I've only been doing this for a few months, I like med/surg and totally see the benefits of getting the experience before going elsewhere. Even though I've been liking it, I can tell it's not where I want to be for too long.

However, I didn't get much of a chance to see many other areas of nursing in school besides the given peds/ob and psych clinicals. we also had a clinical day of hospice and home health nursing. my worry is that I won't know where I want to go after my obligatory couple years in med/surg. I know i don't want: psych, hospice, or home health anytime soon, but as for other specialties or units, I'm torn! I liked the CCU and OB (mostly just the nursery part, though), but I also find myself thinking that the OR would be a cool place to work, as well as thinking about NICU. I just don't know and don't want to get stuck on med/surg for the rest of my life when I know there are other things out there I'd love, but I just don't actually know what they are yet :/

Anyway, I know I'm probably getting ahead of myself...thanks for reading this and/or any advice anyone may have!