insurance doesnt cover BC anymore?

ive been taking the pill for two months now and was about to start my third pack tomorrow. my mom went to go get it and couldnt, because apparently the insurance company doesnt cover it anymore. i take the pill to help keep my cramps under control and so far, its been helping me a lot. i dont want my mom to pay $117 a month, but i also dont want the excruciating cramps to come back. what do i do?