Progesterone taken vaginally

Hi all! I found out I was pregnant on Monday. Whoo hoo! However, I've had 2 miscarriages previously. I have PCOS, normally low progesterone levels and do not ovulate on my own. This cycle, I took prometrium for 10 days and then took Femara on cd 5-9! Obviously it worked, but I am concerned about my progesterone levels as I know that is important to pregnancy. My doctor has prescribed me 200 mg progesterone to be taken vaginally at bedtime. I was just wondering have any of you experience pregnancy with low progesterone and how it turned out for you if you were given a progesterone supplement.