Measuring a week behind, so worried :(

[dilydaly]

We went for an early reassurance scan last Thursday (recurrent miscarriages). The relief when he said he could see the pregnancy and there was a heartbeat was unreal, but then he said it looks about 6 weeks when according to my dates (I'm only going off the date of my last period, not sure exactly when I ovulated) I should have been 7+1. I'm now sick with worry that when we go back for our next scan, this Thursday, he'll say there's no growth or no heartbeat. It's been a long 6 years of trying and this is the furthest a pregnancy has come in that time. I'm beyond desperate for everything to be ok :(
Has anyone ever measured behind and everything has been ok?

I’m so sorry you’re going through this. I’ve no real experience of measuring behind as such, but I do understand you worrying considering what you’ve been through.

While I’ve no real answers, I do know that this early on in pregnancies measuring is really really difficult. I’ve read numerous threads on various forums that the embryo has “caught up” at the next scan for other women. I’ve been there too, and due dates are not established until maybe around 12-14 weeks, even 20 weeks, because of it.

Also regarding ovulation; even if you had tracked it (and therefore been given maybe a 48 hour window) you still have no way of knowing when the actual implantation happened. It may have taken longer than you’d think, sometimes it’s faster and sometimes it’s slower. It definitely does not happen on the same day as the ovulation though.

I just wanted to give you that perspective, that it doesn’t have to mean anything at this stage. The embryo is still so small and might very well measure more accordingly to your own dates on Thursday. Or even if it doesn’t - that doesn’t matter either as long as it’s all ok. Please don’t give up hope just yet.

Wishing you all the best OP 🌻

Sorry forgot to say that in the scans that I’ve measured “behind” it hasn’t worried me too much as I’ve been told it’s quite normal for it not to be exactly accurate.

Hey, I know its hard but try not to worry.
When we went for an early scan I was expecting to be around 8+5 weeks but measured a week behind. I'm almost 25weeks now. It can be hard to get accurate dates at this stage as everything's so small.

I’ve measured behind in all my pregnancies (3 losses 3 to term) it’s fairly common at very early scans because everything is some small sometimes the measurements are a little off. Usually caught up to almost exactly on my dates but 12 week scans or actually a week ahead

easier said than done I know but try stay positive it doesn’t always mean bad news

I went for an early scan and was 10 days behind. I was measuring the same at the official 12 week scan. In fact, I was sent away and had to come back as they couldn’t do all the measurements. The baby, who is asleep on me at the moment, eventually came 9 days late. He’s very healthy and very big!

I hope everything works out for you.

My dates were almost 3 weeks out, not sure how that happened!
Had a big bleed at what I was told was 9 weeks then had to wait 3 more weeks for my 12 week scan where they discovered I was at 9 weeks. All good though and she's nearly 20 now.

Hi I went for an early scan too and was told I was 5 weeks 1 day I thought I was around 6 weeks so I also worried as we had been trying for 5 yesrs. When I went for my 12 week scan when I should have been 12 week 2 days, they put me forward to 13 weeks and 1 day! So my dates were correct! I think they're so small at this stage they can't be accurate. Please don't panic. I'm currently 21 weeks and little one is growing lovely :)

The dates can definitely be out. We know exactly when DD1 was conceived, yet dating claimed it was a little over a week earlier. There is no way they were correct, as we hadn't DTD for some weeks before (or after, in fact).

Really difficult to accurately measure baby at this stage. They are are so tiny.

A sonographer actually demonstrated this when scanning me once. Just a slight misplacemwbt of the measurement, and it altered the EDD a week.

Wishing you luck in your pregnancy. Try to not worry.

Yes me I even posted about it

I had an early scan and all was fine

Then went back 2 wks later as it was ivf and they do a 7 wks one but I was 8wks by this time and I was measuring 6 days behind

The nurse said they are so small at this stage and showed me how easy it was to get the measurement smaller by the curser on the mouse

She caught up at all my extra scans -(I've had loads reassurance scans! ) and now is measuring on the large side at 28 wks !!

I remember the feeling well
It's such an anxious time

But try be positive as possible
It can't still all be fine and no worryin or anxiety will change the outcome unfortunately

I'm just trying to enjoy my pregnancy as much as I can x

All of my scans have said something different. I’ve been for a few private scans and my first one said I was about 4/5 days behind (I do have longer cycles though so that made sense) but then my 12 scan put my 5 days ahead!
the tiniest mm can change your dates by days.
try not to worry :) x

Thank you all for taking the time to respond, it's made me feel a bit better about it all. Thursday cannot come quick enough, don't think I'll relax until the baby is in my arms! Although then I'm sure I'll find plenty more to worry about!
Will try and pop back Thursday to let you know how it goes, thanks again xx

@dilydaly Just wondered how this turned out (if you don't mind me asking). Going through something similar at the moment (should be 7 weeks, measuring 6 wk 1 with heart "flutter" and now have to wait 2 weeks for a confirmation scan! BFP was a huge (welcome) shock due to age and infertility so absolutely terrified!