Hi there -
I haven't heard anything about the uterus and bone loss. There are some contributing factors that make a woman at risk for osteoporosis - smoking, high caffeine intake, women of small build, caucasion and asian women, (I think that is right), and women in menopause, or those who have had their ovaries removed. I think its lack of estrogen that contributes, not progesterine. Have you taken any calcium supplements over the years? You might want to ask your doctor about this question - he/she will be able to answer your questions knowing how far you have progressed, etc. Good luck.