Like you said, its obviously too early to know what we definitely want to do, but we can still have preferences & ideas of what interests us. Ophthalmology is currently where my main interest lies. Ive done ophtho lab work during my undergrad and really enjoyed it. The funny thing is, I originally sought out the lab looking to get involved with multiple sclerosis research since one of my parents has it. I had little interest in ophtho at the time, but as I read more and became engrossed in the research, I began to appreciate it. Im actually currently working as an ophthalmic technician and love it. Working with patients that have visual problems and spending time learning about everything ophthalmology related (going to grand rounds, listening to guest lectures, asking co-workers questions, reading on my own) has given me a strong desire to continue working in the field, hopefully as a physician. Id also love to find a balance between working with patients and conducting research (without going for a PhD though...that can work, right?).
Other potential paths may be Neurology, General Surgery or Internal medicine. Neurology in particular has always been a strong interest of mine. To be honest, Im open to any path, as long as Im a physician. Its just what I see myself being the most happy in life doing. The first step for me is to actually get INTO med school. Once in, I plan on keeping a very open mind during all of my rotations, which wont be hard since I have the kind of personality where I can become interested in random stuff very easily.