Dr said since my mom had breast cancer at 54 i'm not at as high of a risk of getting it as i would be if she had it before 50. true?

True: Or before 40. The National Cancer Institute has an interactive risk assess tool. You can check it out at: http://www.cancer.gov/bcrisktool/

Yes, but it depends: it is one factor. but it also depends on other family history. anybody in the family with cancer ? especially at younger age-less than 40. personal history breast biopsy, obesity etc. FYI- majority - 85%- of breast cancer is sporadic and only minority about 15% is familial/hereditary.