I finished 234 weeks of Harvoni and was considered cured December 2015.

By August 2016 I was diagnosed with stage 4 breast cancer. I had a mammogram in 2015 and all of a sudden I have stage four cancer with prognosis of two years to live.
Has anyone else developed aggressive form of cancer after finishing Harvoni treatment?
I believe this is not unusual and the drug manufacturer is hiding this information.