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Conception Dates


Forum: Unplanned Pregnancy

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  #1  
December 7th, 2010, 06:10 AM
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Join Date: Dec 2010
Posts: 2
I'm just wondering about conception dates, all these dates are starting to confuse me. I'm not sure of my last period dates, I've always been bad at keeping a check on these. I found out i was pregnant, and when i got the scan the nurse said i was 7 weeks, 4 days (2nd December), counting this back takes me to around the 10th October, however the nurse said conception was around the 23rd October, so i'm confused.
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  #2  
December 7th, 2010, 09:10 AM
DramaFreeMama's Avatar Mega Super Mommy
Join Date: Sep 2010
Location: The Burgh, PA
Posts: 1,623
Hey there

Conception dates can be a bit confusing. They confuse the heck out of me as well. Here is a couple sites that may help you figure it out.

Conception Calculator - Reverse Due Date Calculator | BabyMed.com

Pregnancy and Baby: Confused about "age since conception," LMP and due dates?

Just go into that first site and you can enter in your due date and see around when conception should have happened. If you still are a bit confused, the second site explains the math. I hope that can clear it up for you!
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  #3  
December 7th, 2010, 08:29 PM
Gaby&Emmy'sMama's Avatar aka NZ-Emma
Join Date: Aug 2005
Location: Christchurch, NZ
Posts: 56,619
If you were 7w4d pregnant, that means the first day of your LMP was 7w4d ago - so your CONCEPTION date would have been ROUGHLY 14 days after your LMP, so your LMP was around 10 October & conception would have been around 24 October.

Pregnancy is dated from the first day of your last period, EVEN THOUGH you don't get pregnant until about 2 weeks after then....

So when you had your u/s you'd have been 7w4d going by LMP, 5w4d going by conception

So by the time you actually get pregnant, you are already 2 weeks pregnant.. LOL.
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  #4  
December 8th, 2010, 04:35 AM
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Join Date: Dec 2010
Posts: 2
Thank you, it was confusing me. lol x
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