Low progesterone at 7wks?

My hcg was 16,188 at 6w6d but my progresterone was 8. She said it should at least be 10 with ideally 15-18. Has anyone else supplemented in first trimester with low progesterone and gone on tk have healthy pregnancies? I have also read that some people who already have low progesterone are likely to already have lost their peanut and progesterone just delays the inevitable. I have another scan and draw Monday and I’m taking the progesterone but I’m just trying to find my hope.