@Mariancol. We all know exactly how you are feeling. You will find a lot of good information on this site to help you on the next steps. The waiting is the hardest.
To my knowledge, if you are in the public system they aim to get surgery done within 4 weeks. Feel confident that you have been referred to one of the best hospitals in Melbourne and they know what they are doing.
Until the medical team has test results they cannot formulate your correct treatment plan so sure that they will do their best for you. As the BC nurse said, that plan will depend on the results and all will be revealed.
Do stay away from Dr Google as much of what you read is out of date and much won't even be part of your treatment plan.
We are here if you need to chat or vent at any time. No question is too small or too silly.
All the best.