Sally, my mother was diagnosed in 1997, she had chemo then a lumpectomy and the removal of two lymph nodes, then more chemo and radiation, she had a rough year and still goes in every three months for blood work and check-ups, but she is cancer free (she was 65 when diagnosed).
I just went through another biopsy and my tumor has been determined non-malignant, but questionable, this was my 5th biopsy since 1997....should my tumor ever be diagnosed as malignant, my decision will be a double radical. I can LIVE without my breasts. Yes, they can do lumpectomies, but I also am the type of person that would worry about a return and one of the things they tell you about cancer it "stress" is not a good thing.
You made to best decision for you. Any treatment that will allow you time with you children and grandchildren is the correct decision. As my mother's oncologist told her "caught in time, breast cancer does not kill you, it just makes life hell for about 12 months".
Hang in there our thoughts, prayers and good energy are headed your way!