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How To Calculate The Conception Date?

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Posted on Thu, 29 Nov 2012
Question: tryin to find out when i got pregnantif my due date may1 when did. I got pregnant

doctor
Answered by Dr. Uma Rajah Ananth (51 minutes later)
Hi,
If your due date is accurate then the date of your last menstrual period must be 25 th july. The exact date of conception can not be found out.
That is how it is calcuated from the first day of the last mestrual period (LMP).
If your date is given by ultra sound, the exact date will not be given, only the approximate week can be mentioned.
Ultrasound gives a different kind of assessment.
All the best
Dr Uma
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Follow up: Dr. Uma Rajah Ananth (35 minutes later)
that mean Aug 4 have nothing to do wit my.pregnancy
doctor
Answered by Dr. Uma Rajah Ananth (1 hour later)
Hi,
Please remember this calculation of due date only depends on the first day of the last menstrual period.(LMP)
The due date is 280 days from LMP.
As women are sure of LMP it is calculated like this.
Date of conception is not known and can vary between women.
The first 2 weeks include your periods,ovulation and fertilization Dr uma
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Uma Rajah Ananth

Pediatrician, Neonatology

Practicing since :1970

Answered : 891 Questions

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How To Calculate The Conception Date?

Hi,
If your due date is accurate then the date of your last menstrual period must be 25 th july. The exact date of conception can not be found out.
That is how it is calcuated from the first day of the last mestrual period (LMP).
If your date is given by ultra sound, the exact date will not be given, only the approximate week can be mentioned.
Ultrasound gives a different kind of assessment.
All the best
Dr Uma