Anyone use Progesterone?

McCabe` Family🐘 • TTC again with clomid!
I got my results from my HCG blood draw, they were 7377 yesterday. The doctor wants to put me on progesterone suppositories because of my two losses. Has anyone used it? I'm supposed to take them until 12 weeks is that common? I'm nervous because she said it's just to be cautious so idk if she thinks something is wrong with the pregnancy even though she said she has no reason to worry. Thanks ladies.