@Felicia29
Hi! It's a so and so however it has been detected and you are on your way to sorting it out. Once you have that appointment on Monday and treatment is explained it will become clearer. There's a wealth of information and help from fellow forum users here. This link here will become clearer to you once you know what type you have and gives you the opportunity to explore the BCNA website.
https://www.bcna.org.au/understanding-breast-cancer/what-is-breast-cancer/In the meantime deep breaths and distraction. A walk, sitting out on the verandah with a cuppa, a book, silly movie, time with the kids, something as a distraction
Take care