I’m OFFICIALLY pregnant, but progesterone is low

None of this has seemed quite real to Steve because I didn’t have the doctor’s word that I’m pregnant–but I went in last Thursday, and it’s now official. I am about 8 weeks, not 10; the online calculators count from the date of your last period rather than the date of conception. The only worrying thing is that my progesterone levels are low. Progesterone is the hormone that makes you “stay” pregnant, and normal levels for the first trimester range widely from 9 to 45, with many saying that 10 is the minimum level you should have at this stage. I’m at 7.8. We all know that I worry, and as low progesterone levels can result in miscarriage (or signal an ectopic pregnancy), I’m fretting. Google searches don’t help either. I am to pick up a prescription for progesterone pills today from the pharmacy.