Hello Ashley: One way you could start is by talking with a coach at your school. They may be able to provide you with better insights on the profession that you may not have thought about. Also, if you have any relatives that plays sports you could talk to their coaches too; and, I advise you to always check with your school Counselor.
Sports medicine is a broad field containing multiple career paths. Those interested in sports medicine might explore a career as a physician, physical therapist or athletic trainer. The lowest educational requirement for any of these paths is a bachelor's degree, and the highest is a doctorate degree.
Check out study.com site for more in-depth information that you may find useful.
I hope this helps. Best of Luck to You!
Sheila recommends the following next steps:
Ask the ones who are likely to know. So, you need to figure out how to start networking with them. Consider relevant internship, volunteering, and keeping your eyes and ears open for opportunities. Career counselors may help you out too.