Hi @kdeey
All advice above spot on!
Having a breast care nurse is great to help you navigate the system - try and stay away from "Dr Google" - there is a wealth of info on this site and I tended to look at it in chunks to avoid being overwhelmed.
I saw a psychologist who specialized in cancer related distress for a couple of sessions when I was first diagnosed and one of the best pieces of advice was "its ok to cry". I found myself crying in the most random of places for the first few weeks and then it settled down to mainly at night just before I went to sleep.
Its a cliche but take it one step/day at a time, don't try and overthink things and we are all here to help you with questions and virtual hugs.
Take care .