Most people don’t. Without having any family or close friends prior to medical school I know I didn’t.
What changes after 100 days? Well not a lot really. 95%+ will do a residency of three years or more. In fact, to function independently one has to at least have completed a 1 year internship following medical school. Additionally, the medical licensing exam is a 3 step test in which the first two steps are taken during medical school and the last part is usually taken during the 1-year internship phase.
As for me, I have fulfilled all of the requirements for my degree and taken the first 2 steps of the licensing exam. I’m essentially cruising until July 1st when I *plan* to begin a 5-year residency in Otolaryngology (ear, nose and throat/head and neck surgery), after which I plan to do a 1-2 year fellowship to specialize in Rhinology and get a bench science laboratory up and running. So, my formal training is far from over.
*The reason I say plan is because is because residency positions are decided in somewhat of a lottery called “The Match.” So there is a level of uncertainty about where and if specifically one might do residency. Essentially medical students pick a specialty or two and interview at several programs. The applicants will rank the programs and the programs the applicants in order of preference and then the Match decides how to divvy up all of the applicants so the most amount of positions are filled with the highest ranking. Match day this year is March 20th and is when I will find out for sure where I will be going to residency. For my specialty this year there are about 500 applicants and only ~300 positions so not everyone that applied will get a spot in the specialty of residency that they desire. So, there is still some lingering angst until March 20th.