Blue Cross Blue Shield and Minastrin 24

I don't know if anyone else is going through this, but ever since the new year started, my birth control pills have skyrocketed in price. All of 2016, they were $25, now they're $93! I take minastrin 24 and I have been for years. I'm under blue cross blue shield NC. No one I talk to can give me an answer, not the gyno, the pharmacy or even BCBS themselves. Does anyone know why? Or has anyone experienced the same thing?