Progesterone levels!?!?!

So my hcg levels are rising appropriately but barely. Doubling every 48 hours and they are still low. At my first draw my progesterone was 5.5. They wanted to do two more following draws to make sure progesterone was justified, it was. Well, now I'm being supplemented with 200mg vaginal suppositories. Is this a high amount? Anyone have to supplement?!?!? Any help would be great. Was supplementation successful? I had a miscarriage in January and this is just a whole other ball game for me.