Dear Joanna,
Testing for the BRCA mutations can supply you with information that could affect your treatment/surgical options. If you have children the test will provide your family with a bit more direction in regards to their own screenings.
The best place to do some reading on the subject and to ask questions of women who have tested or are considering testing is...
www.facingourrisk.org (FORCE). Harrie is absolutely correct in suggesting you contact a Certified Genetics Counselor for more information on the pro/cons of testing and how they pertain to you.
Warmly,Marcia
Hope you find this information helpful