Low progesterone issue..

Has anyone else had a history of miscarriage due to low progesterone? I have 4 beautiful children but I have had 5 miscarriages in between my pregnancies. I am currently going through one now. Before my 3rd baby I had 2 miscarriages and was put on progesterone to help boost my levels through my first trimester. My husband and I want to have one more baby but this is so frustrating to continue to miscarry in between. Is there anything that helped you to naturally boost your progesterone levels and help to hold your pregnancy? I seems to be able to get pregnant super easy. It's just holding the pregnancy in the beginning. Once I get past the first trimester I have no issues.