I have overactive bladder. Had to go 20 times today. Insurance won't cover my prescription. What to do?

I'm on state sponsored low-income health insurance. I used to pay for my overacrtive bladder medication out of pocket when I didn't have insurance, but it's about $200 a month, and I can't afford it. My doctor said they filed an appeal with my insurance company and it is going through an appeals board. Insurance company say they have no record of any appeal. I've only tried one medicine that works for me. I am tired of having to go 10-25 times a day. It is severely debilitating, yet no one considers me disabled. What should I do?