I think I would normally be comfortable waiting until 42 weeks before talking induction with this pregnancy. That said, I think my due date is too early, because it was based on LMP even though I'm pretty confident I ovulated on day 21. I just didn't have the wherewithal to fabricate a new LMP when asked. Early ultrasound was consistent with LMP, though I know there is some margin of error there. I've told my midwife this and she seemed to accept that I might be going late.
So since a healthy pregnancy can last 42 weeks and I'm pretty sure my due date was a week early, I think I would feel comfortable waiting until 43 weeks before inducing as long as both baby and I are healthy (and it's been an easy, uncomplicated pregnancy so far). But 43 weeks sounds so... dangerous. And people kind of freak out when I mention it. I realize this is a bit premature for me, since I'm only officially 40w+5 but I thought I'd check in anyway. Do any of you moms have personal experience waiting until 43 weeks? Any positive healthy baby birth stories you might share?
Re: Waiting until 43?
How early was your earliest u/s? From what I know, due dates based on u/s around 7-8 weeks are pretty accurate. I'd hesitate to go to 43 weeks based on that due date.
When I went overdue with DD, my midwife talked with me about when I wanted to be induced. They recommend induction at 41/3 or 41/4 because they rarely had a mother go to 42 weeks with a healthy placenta. Past 42 weeks was not an option to them unless I could prove (with charts, IVF records, early u/s) that my due date was very different than they had recorded.
What is very different? A week?
I think my first ultrasound was probably around 8 or 9 weeks, but it's my understanding that u/s margin of error for assessing gestation is around 8% (so plus or minus 5 days at 8 weeks).
I personally would not feel comfortable going past 42 weeks if there were no other issues; with my son I had chronic hypertension and wanted to deliver before my due date.
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However, if you're unsure about your ovulation date at all, the NST is questionable, or your midwife isn't okay with it, then I wouldn't.