Progesterone cream usage ?'s

Could someone please tell me where and what kind of cream to get. I think I will try using the cream to see if it helps. It will be 2 weeks since the start of my period on Sunday. So I need to pick some up soon. How much to use, where to put it and how often. It probably says something on the directions, but just thought maybe some of you ladies had better advice. I felt pretty crappy this past month(maybe it was the 4 month crash) but I don't want to feel like that again. I am willing to try something, although read recent posts on how it made some of you feel worse. I am a little nervous. Tweet