According to my tracking I ovulated around December 16-17 but according to my first ultrasound the baby measured 5 days behind which would mean 21-22nd but I got my first positive test on the 24th of December which seems virtually impossible to get a positive that soon after ovulation. The tech only measured the baby twice with my 3 other babies they did quite a few measurements to get the date.

Think she was off in her measurements of the baby I was 8 weeks according to tracking and she measured the baby at 7 weeks 3 days