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How did you calculate your DD?

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February 8th, 2012, 09:50 AM
momma_d's Avatar Platinum Supermommy
Join Date: Apr 2008
Location: Indiana
Posts: 6,227
Did you go by your LMP or your O date?

I know most OB's go by LMP, but I'm 95% sure of my O date, and I O'd super early the cycle I got pregnant. And part of the reason I know that is not only the symptoms I was having, but also DH was out of town for about 6 weeks, and we went to stay with him for 2 weeks around Christmas. There was no way I would have gotten pregnant while we were apart if I O'd later than I think I did bc we weren't even together.

Also, I'm starting to get a belly already. And just under 7 weeks seems super early to be showing at all. But I just calculated it out by my O date and that would make me 8 weeks on Saturday as opposed to 7 weeks tomorrow. I'm anxious to find out what my new Dr thinks when I go in next Thursday. I dunno... I could be crazy but just curious if anyone has ran into this before...
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February 8th, 2012, 10:09 AM
bettyearl's Avatar Beth, mom to 4 boys
Join Date: Jan 2009
Posts: 4,919
I would totally go by your 0 date - it is more accurate if you were tracking carefully. But, I have to say - when it's not your first pregnancy your belly shows much sooner than your first. With my first I noticed a tiny bump at 8 weeks. This time, I swear I could already tell at 5.5 or 6 weeks for sure.
happy about life in general
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February 8th, 2012, 10:19 AM
momma_d's Avatar Platinum Supermommy
Join Date: Apr 2008
Location: Indiana
Posts: 6,227
well I don't temp and I didn't use OPKs BUT I had two days of EWCM and on the final day I had cramping on my left side. And then I dried right up, and thats when me and DD flew back home and didn't see DH for another 2 weeks. I think its nearly impossible I could have O'd after we came back from our trip judging by my symptoms. The only thing that throws me off is that I tested about 14 dpo (according to when I think I Oed) and I tested negative. But I didn't test for another week after that bc I really didn't think I was pregnant after that. I kinda hope they will do an u/s and see what I'm measuring at bc I'm curious.
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February 8th, 2012, 10:45 AM
3Sapphires's Avatar Platinum Supermommy
Join Date: Feb 2008
Location: the mountain state
Posts: 11,860
I went with O date, since my cycles are anywhere from 35-60 days long.

I wasn't actually temping the cycle I got pg, but still tracking CM, based on that, I was pretty sure when I O'ed, and the baby only measured 2 days off.

FF Chart**CrazyAmiCrochet**
Missing Our Angels gone too soon 6/5/10 (9wks) & 3/1/14 (9wks)
Chemical Pregnancy 5/31/15
Adam Michael 9/22/06 (c-section)~Nathan Joseph 9/4/08 (VBAC)~Lincoln Thomas 9/5/12 (VBAC)

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February 8th, 2012, 10:49 AM
pauriemmo's Avatar Veteran
Join Date: Jan 2012
Posts: 299
Going by LMP and O date only changes my due date by a day. I stick with the later date. It's the same date the doctors office gave me.
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February 8th, 2012, 12:50 PM
GiftsfromGod's Avatar Platinum Supermommy
Join Date: Jul 2008
Location: Michigan
Posts: 5,686
Mine are the same this time. With my first two my Dr went by LMP and with DD I had an early u/s done to determine the due date.
Ruth - Mommy to S (miscarried at 10 weeks), W (9yrs), J (8 yrs), E (6yrs), F (4yrs), D (3yrs), &C (passed away 6 1/2 hrs after birth) & expecting another sweet baby March 2018

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February 8th, 2012, 12:58 PM
Super Mommy
Join Date: Jan 2012
Location: Cincinnati, OH
Posts: 711
I went by both the tine I conceived and the first day of my last period. Both gave me the same date. Ugh, September 11th anyone? However, an u/s early on showed me a day earlier! Yay!!
Missing baby Elliott Thomas since March 10th. I love you forever and always. <3

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February 8th, 2012, 02:32 PM
beginswithb's Avatar Veteran
Join Date: May 2010
Location: Ohio
Posts: 298
I went by my O date. I was charting/temping/OPKing so I knew exactly when I O'd. When I told my doctor, she went by LMP until the dating ultrasound. I gloated a bit when the bebe was exactly as I said.

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February 8th, 2012, 02:38 PM
Mega Super Mommy
Join Date: Dec 2009
Location: Panama City, Fl
Posts: 2,221
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I would go by O date. I went by LMP because I didn't chart that cycle. Good luck at your u/s!!!

Vivian (6)
Caden (5)
Alex (2)
Maura born 9/11/12

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February 8th, 2012, 03:16 PM
momma_d's Avatar Platinum Supermommy
Join Date: Apr 2008
Location: Indiana
Posts: 6,227
Ok I'm feeling much more optimistic about going by my O date! I am prepared for the Dr. to want to go by my LMP, which would be fine, if I hadn't O'd so early. But that will put me a week off! I'll see how it goes next week I guess!
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