http://health.usnews.com/health-news/family-health/cancer/articles/2010/11/16/cancer-risk-from-radiation-of-mammograms-is-slight-study.html

What they found: If 100,000 women got annual mammograms from ages 40 to 55 and then got mammograms every other year until age 74, 86 breast cancers and 11 deaths would be attributable to the mammography radiation. You have a 1 in 1000 chances of developing breast cancer from the radiation. 1 in 10,000 chance of dying from the radiation.

Your total risk of breast cancer is 1 in 8.

Do the math… get checked.