Tamoxifen and clomid

Kasandra
My doctor put me on 100mg of clomid and 10mg of tamoxifen to try to get my to ovulate. 7 days of pills. I had never heard of tamoxifen before except that it was for breast cancer. Anyone ever use it and did it work well? I've done 3 other rounds of just 100mg of clomid and it did not work at all so I'm wondering if the tamoxifen will even help?