I'm so sorry to hear about your diagnosis! but remember Breast Cancer is beatable! My cousin- male- is now a one-year cancer-free survivor. He was 80 when he was diagnosed. I think it is double the shock for men to get a breast cancer diagnosis. He is amazing, active, - watches his food/alcohol intake- but our family has hx of cancer - over 21 cancer diagnosis cases- including my two daughters but we don't have genetic chip.
You never know. As John Lennon said- "Life is what happens when you make other plans"
What I do know is- My sister and I were just diagnosed in October with Breast Cancer-- she is in Oregon and I live here in AZ- I am so grateful to be at Mayo. It is still a shock for me, but I just smile every time I walk in the Mayo doors, knowing I have the best medical care I could ever have imagined. I just pinch myself sometimes.
I have found that worry is just a waste of time that doesn't change anything. Figure out your best way to distract your worries- or channel your thoughts in a positive way- meditate, journal. I can't do those but I do like to read/listen to music. Even sometimes is good to make lists and 1) write down all those things you are worried about-get them out there and star those items you can do something about with an action plan and 2) make a list for the list of those items you can't do anything about and are there for the ride where it takes you. (you can't change a diagnosis- but how you deal with it is a choice. 3) Make another list of all those things you are grateful for - it is surprising what focus does for our perspectives. Choose one thing to do that brings you joy each day.
Here's wishing you the best outcome you can have. Getting to Mayo is a HUGE best step- Congrats for that. Keep the faith.... as my mom would say.