My sister got an MA, worked for over a decade in public health, and then returned to college to attempt biochem one summer. She started as pre-med like all of h

My sister got an MA, worked for over a decade in public health, and then returned to college to attempt biochem one summer. She started as pre-med like all of her friends, realized in her second year of undergrad she could make an impact without going into medicine, and changed her major. So you're right, there are only so many slots for medical school, and you don't even need to be pre-med to qualify. Unless you're just ambitious, ultra-focused, and well prepared enough to do pre-med into med fresh out of high school, you have time to gain experience and decide what you really want.