Lost freshman

Hi! I need help on selecting courses for my first semester
I may want to apply to med school, im not sure but it is a possibility
Im undecided on my major, and im not sure if i should start by working towards fulfilling pre med requirements or discovering new areas of study.
I would also love to hear insight on the best time and way to fulfill the distributional requirements, particularly writing and foreign language.
Some background:
I have 5s on ap chem and ap calc BC( and AB)
A strong foundation in physics and bio
No experience in economics and computer science
Rather weak in the humanities
Any input/ advice would be appreciated.
I dont want to rush into being pre-med, and at the same time i dont want to regret starting late.
Im also interested in BME and chemical engineering.
There are many fields im inexperienced in due to a science-centered highschool curriculum.
Thanks in advance