BMC is a great school and does an excellent job with pre med students. This is THE place to do a post bac pre med program, and that cannot / does not exist in a vacuum. Congrats!
You have learned a great lesson for life; pay attention to what resonates with you. There is a difference between actions having consequences and doing things because you think it’s what others want.
It’s time to let go of the regret about how you spent the last 4 years and embrace the opportunity you have. A great opportunity!