Just need to talk to someone

I’m 59yo and newly diagnosed with breast cancer. 

I’m really not sure I get what is going on either because I’m just slow or it’s just not all clear yet so I feel confused, in total panic and that I’m drowning and there is nobody to save me 😢

I am waiting for an mri this Thursday. I have a 10cm Not Special Type Grade 1 something positive to do with hormones and her2 1+. The surgeon says mastectomy is the only choice because of the size. There isn’t anything clear about what happens after that…

is that how it’s meant to be?  I just feel very lost  

appreciate any words of wisdom for these circumstances?

susan