New member breast CA

Hiya,  I was diagnosed just over 3 weeks ago with high grade DCIS after a routine mammogram, I have surgery booked in for tomorrow.  Don't think  I've  had time to really process it yet, but I'm gettng rather nervous now ! I know it will be what it will be. Hate the ' not knowing' side of things.  Sorry for the rant, just wanted to let off steam