When I became annovulatory back in May, I began a cycle that lasted 105 days. Now I use provera to induce bleeding when I have annovulatory cycles. My GYN prescribed it. His logic was that rather than wait around and hope to O, I can start over with a new cycle. He also prescribed Clomid, but that didn't make me ovulate the first time around.
Talk to your doc. Don't waste months and months waiting to ovulate like I did. Good luck.