Things to do now or later -
Now: if you’re able to make time to explore healthcare through service, shadowing, and/or research, that could help you attain some experiences and observations that you can cite in your application, essay, and interview. And these experiences will help you decide if you are compatible with medicine.
Now: it’s nice that you are at a competitive school, in a STEM magnet, and diverse extracurriculars. But try to not be overwhelmed. Keep your grades up (like preferably as close to 4.0 as you can). Score well on your SAT/ACT/SAT2. Have good relationships with any letter writers (anyone who teaches or coaches you - sees you working hard, excelling, demonstrating good qualities that a Med school would like).
Next year: make a list of programs you are interested in based on your scores and resume. Look through CC, SDN, and Reddit for info about the schools. Don’t apply to a school you don’t want to go to. Learn about the med schools so you can be specific about your interest in their program.
Comments: Getting into a BSMD program is not formulaic. I got into one (I only applied to 2 competitive ones) because I had a vision for my career that I developed based on shadowing, research, etc. I am sure there were others with higher SAT scores or more “unique” ECs (like captaining three sports or starting a nonprofit or having national awards), but I believe I got in because I communicated my reasons for doing medicine in a way that lined up with the med school’s vision. All of my ECs shared some sort of theme and it all flowed in the essay and the interview.