I only had one AF after DS2 was born and that started on the 5th of December 2010, I got my first bfp of the 16th of Jan and it was quite a strong positive. A blood test on the 19th showed an hcg level of 1890. Before babies, my cycles used to be roughly 35 days, but I've only ever had one AF between pregnancies, so really not sure. I'm guessing I'm approaching 7 weeks now and was around 5 weeks when I got the bfp given that it was such a strong line.
For the dating scan, I want to make sure I'm over 8 weeks so we can definitely see the baby and the heartbeat clearly. I'm thinking to book for the end of next week, around 11th of Feb, does that sound about right?