Welcome @Agent14516. Ditto the comments from @byo_boy above.
We have all been diagnosed with BC but we are all so different in the actual diagnosis and treatments offered. My story is quite old as I approach the 10 year mark and I often wonder how I would be treated now.
Have you had any discussions around what you would do if the mastectomy is the plan ? Are you thinking of reconstruction ?
There are some private groups on here (i.e. Choosing Breast Construction and Flat Chat - No Breast Reconstruction) which you should join to give you some information for discussion with your medical team.
I see you are in the eastern side of our lovely cold State so guess you have options for treatment ?
I will send you a private message so you know how that works if you want to chat more privately with someone.