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????due date????

My doctor says I got pregnant nov. 14th and that im due aug. 20th but that seems to long? Does that sound right to you?
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134578 tn?1614729226
Think back, did he say you "got pregnant" on November 14, or did he say Day 1 of your pregnancy is November 14?

Doctors calculate pregnancy using a 40-week calendar, though from the date of conception, pregnancy is only 38 weeks long.  They go back and start the count on the first day of your last period.  This is the way doctors have dated pregnancy for a long time, certainly from before the invention of ultrasounds, because the first day of a period is a noticeable signal and known date, and ovulation is hidden and happens on a date not usually known.  Of course a woman is not pregnant the first day she is bleeding from her period, but it is easy to calculate 40 weeks beginning then, knowing that the first week or two are simply an add-on for easy figuring.

A woman whose last menstrual period began November 14th would indeed have a due date of August 20.  The conception window would have been November 24-December 2.  

That's why I was asking what question the doctor was answering.  If a woman asks "How far along am I?" the doctor will always answer using the medical way of counting (i.e., starting Day 1 with the first day of your last period.)  Only if she specifically has a discussion with her doctor about when conception might have occurred, will she get a date based on conception.
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Avatar universal
I got pregnant November 10 and im having my baby boy August 2
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2026902 tn?1369098398
They say my date on conception was Nov 6th and I'm due Aug 1st
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