Hi Rick,
Just to preface, I hope nothing in my post came off as cavalier - I honestly do wish I could have gone back and taken some of those opportunities. After spending my entire first 2.5 yrs of college freaking out and taking all biochem, bio, bio, more bio, doing unhelpful hospital volunteer-work (um, filing and shelving in an office) - all because of preconceived notions of what you HAVE to do to get into med school, I ended up branching out more and exploring different interests. (BONUS: It will HELP your med school application to show that you have cultivated other talents and interests!! Separates you from the other 8,000 applicants who all volunteered, took biochem, formed a future surgeons of america club, etc. etc.)
If you do go into plastics, you will have to get into med school, residency (integrated) and/or fellowship, 6-10 YEARS after med school!! If you can't exist in the moment NOW as a freshman, you will always be anticipating years ahead and missing out.
Good luck!
NYC