Taking a pre requisite for medical school as pass or fail and then retaking the class?

I’m basically going to be starting at a community college. My reason is to save money by living at home and going to a college with a much lower tuition price. This is a valid reason. My family lost our home 2 years ago and we have a large debt, so I do have a reason.

I’m not going to hurt my family financially just so I can go to this school that has overcrowded classrooms.