High Risk Categories??

Yes, there are a big variety of conditions that are thrown in the bucket of 'high risk'. 

They call people 'high risk' from being on birth control pills to having LCIS to having BRCA.

Now BRCA positive women can have up to about an 85% lifetime chance of having breast  cancer.  That's one of the biggest numbers I know of.  But the 'additional' risk for being on birth control is relatively small, and goes away fairly quickly after birth controll pills are stopped.

Yes, being on long term birth control and having no children are risk factors.  

You can go to http://www.cancer.gov/bcrisktool/ and look at your numbers with and without these factors to see how it changes risk.

But note that these estimates, even though they may be accurate for  the group of people with those characteristics, it is VERY POOR at predicting YOUR breast cancer risk.  I know that seems odd.  Its a statistical thing. 

You will probably see that being on birth control for many years does slightly heighten your risk, as does not having children.  I had those risk factors too (until I stopped taking the pill).  

My grandmother, rather than my greatgrandmother, had breast cancer.  I ended up going to a genetics counselor because this grandmother was a paternal grandmother, and she had only sons.  I was told my risk of the BReast CAncer gene mutation was about 4%.  Only a genetics counselor can really calculate your risk for having a BRCA mutation, but it would be low.  It is thought that only about 15% of women with breast cancer get it due to a hereditary single mutation, such as BRCA.  But unless your family had many, many sons or very few people in each generation, your risk for having BRCA is probably fairly low.

I know this is very distressing to go through.  But remember 80% of biopsies are benign. We all like to be ready for whatever is ahead of us.