Amy,
First of all...CONGRATULATIONS!! You should be very proud of your achievements, esp at such a young age. My hat's off to you! I'm one of those late-bloomers...will be 33 when I start med-school this fall.
However, you should read a thread I have started in my forum: 'Everyone,' entitled: "A recent AMA survey."
You know, becoming a physician is a life-long committment to what be simultaneously the most rewarding and potentially personally destructive of professions. Yes, you are involved in helping people in need and that is WONDERFUL!! But, you're also considering entering a profession that has among the highest divorce, suicide and substance abuse rates...fully 39% of practicing Docs [per the AMA survey] would not have become physicians has they had all to do over again. It's a stressful way to make a living!!
I'm not saying any of this to encourage or to scare you away. I just really feel you should VERY carefully research if this really where you want to go with your life. I did not firmly commit myself to this route until my mid-20s, even though I had always thought about becoming a Doc.
Your Ugrad years are some of the most important years. You will truly begin to develop into the person you will be as an adult. Therefore, it is imperitive that you really "Experience" the world around you and explore your options.
If after all that, you still wish to become a Doc, I know all of us already there will welcome you. However, if you chose to pursue a completely different path, we will support, with equal fervor, that decision as well.
The take-home message from this rambling post is: Do you what makes you happiest!
Best of luck and success to you in life!
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'Old Man Dave'
KCOM, Class of '03