About 20 minutes ago my OB called. Yep, the actual OB, not a nurse. I was surprised by that, but I could tell from her voice that it was probably good news. My HCG was 620, and my progesterone was 15.3. She said that's very good, so I'll take her word for it. I'm so relieved! :)
I know next Monday's blood draw will be more important (to see if my numbers are increasing) but it seems like a good start! That call made my day :)