Breast MRI today

My annual mammo revealed a whole slew of cysts that LOOK benign, so my doctor ordered this test. He promised to call me on Monday and let me know what we do next...most likely a biopsy to make sure of what's in there.
I already told him that if anything looks bad, I want to just go for the second mastectomy -- I dread the idea of going through all that cancer treatment again. My daughter's big Hawaii wedding is next year and I'd hate to be in chemo recovery for that.