A question: EDD and induction, what if you have a range of dates from scans?

[thunksheadontable]

Right... just a hypothetical here.

My EDD from LMP is 13th June (but I have a 24/25 day cycle).
My EDD based on when I think I conceived is 9th June (one off event that month... but that obviously only takes account of the day we actually had sex when this doesn't really give info on ov and was CD 11).
I had an early scan because of bleeding which estimated date as 17th June.
My EDD from private scan (NF done at 11 weeks 6 days) is 11th June
My EDD from NHS scan (done at 14 weeks) is 9th June.

I think, from this, the likely due date is around the 12th or 13th... but because my NHS "official" due date is 9th June my induction date would be the 23rd if I went over as I did last time which is only 10/11 days over I reckon.

My last induction was after my waters went, so it wasn't just post-dates.. but that was at CD 13 and to be honest, the induction wasn't bad.. but my body was obviously more or less "there" so to speak. I don't want a situation where I am induced for "post-dates" when there's no need.

Now I know you don't HAVE to have an induction for post-dates anyway, but I just wondered how amenable hospital staff are to changing a due date when you've got good evidence that it's probably not accurate anyway? I have been quite anxious this pregnancy and the truth is if I have people start on me with tales of stillbirth and other stuff if I decline a post-dates induction on the 23rd, I will cave (and probably freak too).

I have a consultant's appointment at 36 weeks and I am wondering if it would be worth talking to them about changing my date officially?

(Mind you, having said all this baby's head is apparently currently measuring 36 weeks on scan so it might be a bad thing to be pushing for extra time!)

If the EDD from both the NHS scan and your calculation of when you conceived is 9 June, why don't you think this is the date? The LMP calculation tends to be out by a few days as everyone has a diff cycle length and the other 2 scans were a little early to be as accurate as the subsequent NHS scan.

I thought 11+6 would be more accurate than 14 weeks? I thought 14 weeks was a bit late for a dating scan

Totally anecdotal but I had a 3.5 week difference between LMP and NHS scan. The NHS scan was done at 12.5 weeks by LMP but gave a date of 9 weeks. The NHS refused to entertain the idea that the scan was not accurate - even when I had a scan 3 weeks later which put the foetus at 99th percentile for 12 weeks but 50% for 15 weeks; same at 20/23 week scan. And also due to business trips DH and I had not been in the same country for 2 weeks either side of 'their' conception date.

I was told - repeatedly- that the earlier scan was more accurate. DC was born on NHS due date with no vernix, loads of meconium, dry peeling skin, lumpy placenta - i.e everything you'd expect from a 42/43 weeker.

Because of that, and because I don't think the risks associated with induction make it worth doing for the reason of dates alone (term is 37-42 weeks etc) - I would forget making them change the date, and just agree to induction (if required) when I was comfortable. Or uncomfortable

I had an early scan and they said the dates were +/-5days as it was too early. If your conception and 12 week scan dates tally go with that.

I think I had a two week difference between estimated dates. I was induced at 14 days post the later date. Huge baby, hungry, not sleepy - the midwives said he was like a 3-4 week old - ie I didn't get that nice period when (some, e.g. my second) they sleep more.

I think if I had been lined up for induction the second time around (I went for an elective c-s to avoid delivering another elephant) I might have been a little more vocal when being told when I was going to be admitted....