Progesterone

Kate
7 weeks today. Just got lab work back and my Progesterone levels are down. After doing research I have found that I I can't get my levels up I will more then likely miscarry. Has anyone else had this and had a healthy baby? I didn't have this with my first. I started the pills you have to stick in your vagina last night and was told I had to take them until I'm 12 weeks. They aren't cheap either! Insurance doesn't cover them so it's $118 for 30 days. Did anyone do anything else to help produce more Progesterone naturally?