Low progesterone? Does wild yam cream work for you?

For those of you with low pergesterone, what products do you use?? I lost my last pregnancy due to low progesterone I believe. The doc said it was low and put me on a progesterone supplement but it was too late. This time around, I'm using progessence plus essential oils on my forearms and neck. I don't want to be taking any pills, I want to go natural. But the oils are too expensive, however I'm hearing about the WYC (wild yam cream), anyone used it? And where do you get it? I have heard one success story with this and am willing to give it a try.