Pcos and soy isoflavones

Karissa
Alright guys I have been ttc for 11 months now. I have been diagnosed woth PCOS and prescribed metformin and provera. I take provera 10 days at the end of my cycle to bring on a period and 1000mg of metformin daily. My doctor wont put me on clomid til I have passed the 1yr mark after my husband and I go through extensive testing....I am thinking about trying soy isoflavones to bring on ovulation but worried about the side effects (it said brest cancer, etc...). Has anyone here used Soy? What was your experience? Did you O? Did you get your bfp?