After a HORRIBLE week of being unsure, my blood results finally came in!
1/17/12: 30 hcg level
1/23/12: 643 hcg level
I used a calculator on this site and according to that, I'm doubling every 32.6 hours, or 1.4 days. Is this quicker than average? I don't know when my last period was so they don't really know how far along I am - somewhere between 2 - 4 weeks. I got my first (VERY VERY faint) BFP on 1/16, and took a test every day after, all showing BFPs...with line getting darker each time. So I think I'm about 20-21 DPO today.