I just returned from my endo appointment. She said NO to my request to start progesterone. She read all the current articles(I sent her the link to the UK article posted here), consulted with another endocrinologist with transgender patients, and decided that it was still too much of an unknown. Her point was that I was already doing a lot of new things to my body, and thought it was risky to add another hormone that has little to no research about its effects on transgender women.
Israel is a small country with state supported medical care. She is one of two endocrinological clinic heads that provide transgender medical care. There are no other alternatives. I thanked her for her cautious, conservative approach to my health!