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Why do doctors

why do they count the two weeks you're not pregnant? I never knew that I'm confused lol
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Avatar universal
I knew there was some story behind it (thank you rock rose) I have always just been Curious! :)
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13167 tn?1327194124
Because this went back generations when it took months to determine if a woman was pregnant.

The best "hard fact" they had was the first day of the last menstrual period,  and after that all they had to go by was a doctor feeling around on the uterus to determine she was pregnant.  Then there was the stage where they had the rabbit test,  injecting urine from the woman into the rabbit.  If the rabbit's ovaries swelled,  the woman was pregnant.  (Poor rabbits).  

Anyway,  it just dates back to a medical time period hundreds of years ago when they didn't have the technology to date conception as they do now.
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5098230 tn?1430974779
Because you can go two weeks over 40 weeks or two weeks under 40 week
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5648238 tn?1431863784
They can't know for sure when you conceived, but you should definitely know when you had your last periods.
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10817881 tn?1422287520
Exactly!:p
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Avatar universal
Lol whatever works :)
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10817881 tn?1422287520
I'm not sure but it just makes it easier if everyone counts it the same :p
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