Natural progesterone cream?

I have a couple of large fibroids that are really giving me a lot of trouble. I can get a partial hysterectomy but would rather not. A holistic doctor suggested that I use bioidentical progesterone cream to back down my estrogen levels which may help the tumors shrink plus use some liver detox pills. Has anyone had success in this area. I'm a little afraid of the cream. Used it two days in a row now and feel as though I'm experiencing some weird side effects.