I worked as a research technician working on RNA interference. I can't believe it I started three years ago, time just flew by. Let me make a little amendment. While it was three years ago that I graduated undergrad, I did a five year dual degree program so I'm probably only one year younger than you.
I'm not really concerned about my age relative to the rest of the class. Downstate has a large class and since the mean age hovers around 23 or 24 there should be a decent amount of students our age. My general feeling is unless you have a spouse or children, there probably won't be too much of a difference between 24, 25, 26, 27 year old medical students. I may be wrong but time will tell.
What have you been up to these past five years?