T.L.
Hi R., I'm currently 29wks along and at first my progesterone was lower than they liked so I was put on supplements until I was 16wks along (mine was a 15 and my OB prefers it to be 17 or more). The HCG is another story. It should at least double every 24-48 hrs. The next reading will give you a better idea if the pregnancy is in trouble.
I wish you the best of luck and hope you go on to have a healthy & happy 9months.