Actually, many medical schools do not require calculus. Most require 1-2 semesters of math (usually including a statistics course). Also, if you're not a math person and do want to attend one of the schools requiring calculus, I'd suggest waiting until college, as many schools do not accept AP credit for prerec courses. Take Calc I (and Calc II if necessary for your major) during college--much better teachers, much more comprehensive, less work (might be a little biased as a college math teacher right now) 🙂
And don't worry about what other people are doing. It will save you a lot of neurotic moments in college and medical school. If you're like most people, there will be people doing better than you and people doing worse than you. That's adulthood...