Hi Pauline,
Three diagnoses of breast cancer in close relatives on your mother's side suggests a substantial probability that there is an inherited breast cancer gene on her side of your family. If there is, there's a fifty percent (one in two) chance you've inherited it.
There's a lot of good reading on the internet about inherited breast cancer and genetic testing. My suggestion would be to quietly explore the information and discussions at the sites I've given links to below. That will put you in a much better position to make a decision about whether to go see a genetic counselor, and to have an informed discussion with the counselor if you decide to see one. I'd be surprised if they don't suggest genetic testing if that's what you want to do.
Three websites where you can find very good articles and discussion about hereditary breast cancer and genetic testing are Breastcancer.org at www.breastcancer.org, the FORCE website www.facingourrisk.org, and the National Cancer Institute (USA) website www.cancer.gov. Here's how to find the info on each site.
On the Breastcancer.org website, try this direct link www.breastcancer.org/risk/factors/genetics.jsp or go to their home page at www.breastcancer.org and click on the link 'Breast Cancer Risk Factors' (it's under the heading 'Lower Your Risk'), and then look at the links on the left side of the new page to see the range of topics covered.
On the FORCE website, click on the link "Information and Research" on their home page www.facingourrisk.org where you will find links to a variety of good information.
On the National Cancer Institute website, go to the Breast Cancer: Prevention, Genetics, Causes page at www.cancer.gov/cancertopics/prevention-genetics-causes/breast and the Cancer Genetics gateway page at www.cancer.gov/cancertopics/prevention-genetics-causes/genetics and scroll down the pages to find links to their articles.
Good luck if you get tested and good luck with your testing Mystik73 🙂
Cheers - Ed
Http://bestcancersites.com/breast/