Early scan, baby measuring 1 week behind…

[Bumblebee99]

Looking for some advice….
I went for a scan today at 7w, baby only measuring 6w. Saw yolk sac and heart flicker on the screen so no concerns there however…. I have been tracking ovulation with LH strips and know when I ovulated and the days we BD and I had a very early positive test that got dark very quick.
LMP - 22 Sept
Ovulation / LH peak - 6 Oct
First positive test - 15 Oct
So if baby is only measuring 6w, I would’ve had a positive test at 2w2d right? How does that work?
Is this worrying? I can’t help but think something is off. Please help!

I wouldn't worry at this stage, it's fairly common for them to measure out in the early weeks as the embryo is so tiny, they're literally dealing in fractions of mm's

That's why they don't give an official due date until the 12 week scan (often called the dating scan) as the measurements are much more accurate then.

Great news you saw the flicker of a heartbeat. Congratulations and wishing you a healthy pregnancy.