In addition to the excellent info
Sherlock has already given you, and without wanting to dictate degree types to you, depending on your GPA (feel free to share it with us so we can guide you more accurately), you may want to look into degree pathways that involve doing honours, and then masters degrees that are career oriented and can be entered with a BSci or similar. Degrees such as postgraduate entry dietetics, speech pathology, occupational therapy, etc (and there would be so many more, these are just the ones I'm familiar with off the top of my head) could be options for you to consider given your interest in medicine and the fact there is some crossover here with regard to patient contact and health/medical settings. All the while, you can be applying via non-standard pathways (again, we'd need to know your GPA to guide you on this) as
Sherlock has identified.
I only mention this as often people don't realise that, if you're prepared to do more study (and clearly you are), then you can still salvage an undergrad that currently feels pretty directionless and use it towards some really interesting and rewarding professions, so all is definitely not lost!
Again, as
Sherlock mentioned, there are quite a few of us here who've entered Med after doing previous tertiary level study, and we can definitely help you out, but also have a look around the forum and, perhaps more importantly, have a bit of a think about career options (besides medicine, because that's a given) that might interest you.