How to become a doctor in Australia without having done year twelve?

You can't do undergrad medicine but could get into another degree with a foundation year and en after that apply for medicine BUT any mental disease issue you have had in the past may affect your registration....i.e. It be able to practice medicine. So all that work only being able to work in pharmaceutical companies or research only....are you prepared for that? Medical jobs are very rare now...the number of graduates who will be getting even intern positions is decreasing so they can be very picky...any defect in your ability to work could price you out of the market