My cousin had that metastatic breast cancer a few years ago. It was in one breast but she had decided to have a double mastectomy to make sure that she was doing everything possible. She had done a lot of chemo and other treatments over what seemed like a long period of time. She has done great but all of those treatments destroyed her bone. I believe she is on something for her bones now too. I hope that you get great results about your cancer. It's awful that you think you are living your life right and then end up with something awful.