Hi and welcome!
I'm putting a link here which will give you the opportunity to explore the BCNA website.
As others above have said your GP can't tell you precisely until such time as you've met the specialists and sometimes that may vary again
Try to keep yourself distracted
Once you're in the system you'll find time will pass quickly
Your GP will be your go to as well as. I consider mine as my medical rock
I am a private patient. In the public system my surgeon mentioned they have KPIs to meet so don't fret
Take care
https://www.bcna.org.au/understanding-breast-cancer/new-diagnosis/getting-through-the-first-few-weeks/