Baby measuring different at each scan??

[Babyn1]

Hey girls, just wondering if anyone can share their experiences to ease some anxieties I have!

Based on my LMP, every Saturday my baby is one week further along so this Saturday I should be 11 weeks.

I went for an early scan thinking I was 6+5 but they measured me at 7+1, which I didn’t think anything of as my cycle does tend to be 26 days so this would make sense.

I then had some bleeding and went for a last minute private scan on a Saturday so i thought I would have been either be 9 weeks (LMP) or 9+2 (based on first scan), but she measured me at 9+4.

I then had a scan at EPU the Thursday after, and they only measured me at 9+4 then, when I should have been either 9+5 (LMP), 10 (first scan) or 10+2 (second scan).

I know it’s only a few days but has anyone experienced anything similar and everything has been ok? Is it anything to worry about and do you know why I keep getting different measurements? I know it’s all an estimate but I guess in these early days it’s all you have to go off!

baby has been fine with a good heartbeat in all scans but just thought I would pop in and ask about this :)

@Babyn1 At this stage you've got to remember the baby is TINY so small differences in how each sonographer measures you can make differences of a couple of days. I would really try not to worry about it. My NHS 12 week dating scan for both my pregnancies have given me a different, earlier due date than my 100% certain known due date from doing IVF both times. If you have slightly bigger babies, or slightly smaller babies it will change the dating. As long as baby is growing it doesn't really matter. They'll give you a due date at your 12 week scan and then everything will just go by this date

As PP says, the difference in measurements is less than milimeters, the age, accuracy, calibration of the ultrasound machine will all make a difference at this point.