I too have been using natural progesterone cream based on Dr. Lee's book. I had a hysterectomy earlier this year because of endometrial cancer. I am absolutely SURE it was because of estrogen dominance. I don't use estrogen.
I was getting my cream from Women's International Pharmacy, which you need a prescription for. I don't believe there's anything in it but USP progesterone?
I'm sorry to hear Dr. Lee had died. I didn't know that. :(