To the OP:
I followed a similar path as you (PM me if you want more specifics), and I graduated college at 19. I know several people in my cohort who went to medical school, law school, and got into really prestigious, competitive jobs right out of college. People never would have guessed we were as young as we were.
I don't think most people realize how motivated, talented, and well-rounded a person you need to be to make such a non-traditional educational choice and get through all the hard work of college at a young age.
As long as you have a coherent story about why you want to go into medicine, can demonstrate that you know what you're getting into, and present yourself with maturity and humility, I really think you will have a lot of success applying this year.
The only thing I would caution you against is rushing into the profession if you're unsure, or haven't explored other opportunities. One of the best things about starting/graduating college early is that you have plenty of extra time to figure out what you want to do. I know a lot of people would encourage you to use it now, but there are opportunities to "use" your extra time later. You could take a year or two off during med school or after med school. You could have time to do a long global health outreach program once you've acquired the requisite doctoring skills. If you wanted to write a book or pursue an anthropology degree or something else in the future, you could do it then.
There's no point in waiting if you know this is something you want to do now. You will learn and mature in med school the same way you will learn and mature outside of med school, because that process is really just driven by experience, and you sound like the type to seek out the right experiences no matter what environment you'll be in.
If I had known I wanted to go to med school straight out of undergrad, I would be done by now. I didn't know then, and I made the right decision to wait to know myself better. I am a lot more mature than I was at 19, but I know there will be so much more learning and maturing to do in med school, that I feel like the end result would have been the same in the grand scheme of things.
You should never shy away from opportunities that you think you are ready for. Use your "extra" time when you really need it.
Good luck!
