Originally Posted by Sasha's Mama
I would adjust my LMP date if I knew when ovulation happened. I have 35-45 day cycles and no matter how many times I tell this to my HCPs they want to calculate my due date from the start of my cycle, then get all freaked out when I'm measuring small, and I have to explain it all over again. So frustrating.
If you know when you ovulated, I would "lie" by giving them a LMP date 2 weeks prior. I had a long cycle this time, so I'm just giving my ovulation date and dating back 2 weeks if that date won't work.
I've been calling around interviewing practices and being "qualified" over the phone and no one seems to want to believe my ovulation date and several practices insisted I was further along no matter how much explaining I did (I have an exact ovulation date, and an implantation date, 3 daily negative tests before a positive all of which fits the exact pattern with my other 2 pregnancies plus I only had sex 2 times, 2 nights in a row, in the last 6 months, a week and a half AFTER the little wheel says I got pregnant so... I know my dates are right.) I use this issue to help me rule out providers, if they won't listen to me know they won't listen to me later.
I wised up and gave the nurse who did my proof of pregnancy form for insurance my revised LMP date so I have a paper trail with the right date.
As far as worrying about post date issues, I'll share my situation.
My first baby was 43 weeks.
My second baby came 3 days after his EDD. But he has Ds and babies with Ds often come 2 weeks early.
I expect this one to be late too. I'll be thrilled if he/she does not though!
There is family history on my mother's side of 42+ week babies (grandmother's 2 kids, my mother's 2 kids, and my aunt's 2 kids were all post date babies.). I have had all of the non standard labor/delivery issues my grandmother had. (Post dates, looooong labor, water broken for 1 week before labor, labor beginning in start/stop pattern for days before really getting going) basically all of the things that lead to a c-section now. My sister and maternal cousin had babies last year and went post dates, water broke with no labor, then they had their labors kick started with pitocen and ended up with c-sections for failure to progress. So for me, I feel good being watchful and monitoring closely, but waiting.
I had to birth in a situation where anything after 41 weeks was a cut off, I'd be really tempted to pad my ovulation date a week.
I'm planning a home birth in a situation where there is no pressure but if I end up needing a non emergency hospital birth I would just not show up for an induction simply for post dates unless the baby was showing signs of distress (an ultra sound with "low amniotic fluid" would not be enough for me since this has not been proven accurate.)
I should add that if when the time comes my intuition was feeling like something was wrong, I'd listen to it and not wait and see. As much as labor and pregnancy intuition get mocked, I do believe mothers often know if something is wrong long before the wrong shows up on a test.