Progesterone levels

I heard back from my doctor the other day that my progesterone level is at a 9.2 and I've heard that sometimes could lead to miscarriage.. my doctor put me on suppositories 400mg every night. I'm really worried and hopeing my baby is ok. This is my first pregnancy. I Won't be able to see Doc for another few weeks. I've done a lot of Googling and it has made me even more scared reading about it.. Has anyone gone through this issue before? Any insights?