Welcome to ATAR Notes, nedia3!
I'm glad to hear nursing has piqued your interest! With a Bachelor of Nursing, you can are eligible to apply for postgraduate medicine* provided you have satisfied the entry requirements - usually an interview, and competitive GAMSAT score and GPA.
*At UniMelb and Deakin in Victoria (I think Notre Dame has a clinical school in Victoria too though but they aren't considered a Victorian uni per se). Monash requires the completion of a Monash degree - Bachelor of Biomedical Science (and Bachelor of Biomedical Science (Gippsland Partnership Program) at Federation University), Bachelor of Science with the completion of specific units, Physiotherapy or Pharmacy. There's more information about entry into Monash graduate medicine
here.
Hope this helps