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Splitting Hairs  

post #1 of 12
6/12/08 at 8:43pm
Thread Starter 
I conceived via a trigger shot and IUI. That means we can pinpoint the date of conception pretty well. The RE that I saw uses that date to determine EDD, but my MW uses the date of LMP. There is a 4 day difference (22nd vs 26th), which seemed insignificant a couple of months ago, but is starting to seem more and more important in my mind. Which date would you put on your calendar as the 40 week mark? I know it doesn't mean the baby will come, it is just a milestone, you know?
post #2 of 12
6/12/08 at 8:50pm
I would go by the RE, but that is just me!

Jacqueline
post #3 of 12
6/12/08 at 9:20pm
I'd use the RE date, too....
post #4 of 12
6/12/08 at 9:22pm
We went through that with our third. I'd go with conception date over LMP for sure. (FWIW, my DD came a week before her EDD...haha...she was smaller than my other three, too, so I'm sure we were right on.) In my case, LMP is usually off by 5-7days; I'm not a 28-day cycler naturally.

Best wishes to you! Still hanging out and waiting here, too.
post #5 of 12
6/12/08 at 9:29pm
I'd just pick whichever date is later and use that. Better for the morale if you go post dates [says the woman who's now officially post dates]
post #6 of 12
6/12/08 at 9:41pm
We use NFP and I knew when I ovulated... By my ovulation date my due date would have been 4 days before my lmp due date. We kept both of them in mind in case i did go post dates so I would have more time to play with... but I used my ovulation due date most of the time...
post #7 of 12
6/12/08 at 9:47pm
Quote:
Originally Posted by kltroy View Post
I'd just pick whichever date is later and use that. Better for the morale if you go post dates [says the woman who's now officially post dates]
Me, too, absolutely! But, the conception "date" (wasn't sure which one that was) will, technically, be more accurate.
post #8 of 12
6/12/08 at 9:54pm
I'd probably go with the conception date but the idea of just sticking with the later date seems good, too. Early on, it doesn't seem to matter too much but if you have someone pressuring you about being 'overdue' it's probably nice to have a cushion of a few days.
post #9 of 12
6/12/08 at 10:10pm
I like the idea of going with the later date!
post #10 of 12
6/13/08 at 11:24pm
Thread Starter 
At the MW today I found that they had changed my edd on all my charts to the 22nd. I had forgotten that it became an issue a few weeks ago when I had to go to l & d for frequent contractions (I was dehydrated.) I was straddling the 35/36 week line, which made a difference in which hospital I would go to because of the level of NICU care. Anyway, I guess I that point they decided to use my date of conception since we know it exactly-- the 4 day difference was working in my favor. I guess if I go more than 2 weeks past edd it will work against me. So now my "official" edd is the 22nd--for better or worse.
post #11 of 12
6/14/08 at 2:13am
I'm so brain dead I can't figure out if you need time or don't want time... LOL Don't bother breaking it down for me... I'd need diagrams and someone holding my hand... I'm so dumb today! :P

Anyways, I just wanted to say I feel your pain... I've always known my cycle lengths and it gets so frustrating when hcp wont factor in that you aren't a normal 28 day-er... My first baby I was 22-23 days... so it made a BIG difference in my mind!!

Hope I'm making sense!! :P
post #12 of 12
6/14/08 at 7:52pm
We've used FAM to conceive all 3 times, so I knew when I ovulated for #1 and #3 exactly, and walked into the MWs saying, "I'm due on...." they have always said, "Mmmm, okay." With #2, DH went out of town for work for 3 weeks, so I figured there's no way we'll get pg this month and stopped charting. Except, oops, we got pg that month. so then I had a 6 day window where I might have ovulated. My MW got out the "date wheel" calculated from lmp, and added 6 days! She was like, "how does the 15th sound?" I said, sure and guess when he was born. the 15th!

Anyway, all that is to say that I think I'd go w/ the later date b/c I'd rather have the "insurance" on the other end, but I have absolutely no familiarity w/ IUI procedures, so I might be speaking out of turn...although PPs have said they'd go w/ later, too.

At this point, i would totally share your frustration, too, though. I absolutely do not want to have this baby in July, despite my due date being the 30th of June! I'm counting on never having gone past my due date to get me through!
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