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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Does A Big Difference Between Conception Dates And LMP Dates Imply?

I have a due date of May 15th, 2011. My last period was the week of July 17 2010. My conception dates and LMP dates are so far apart. how is that possible? Is that accurate? I was out of town till the end of August and it is raising suspicions in my mind as to who is the father. Is it possible for me to have a conception earlier than August ?
Sat, 10 Sep 2016
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OBGYN,  's  Response
hello
firstly I want to ask you how have u come to your expected date of delivery I mean is it on the basis of ultrasound

please tell ur previous menstrual history were they regular , at what interval did they come, was there any history of shortened cycles

difference between conception dates & last menstrual date usually occurs in patients with cycles that occurred earlier than 21 days or later than 35 days

please also provide ur usg report with dates of usg as expected dates calculated on the basis of usg differ in accuracy depending on timing of usg

if expected date of 15 may is accurate then chances of conception in August r very less
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What Does A Big Difference Between Conception Dates And LMP Dates Imply?

hello firstly I want to ask you how have u come to your expected date of delivery I mean is it on the basis of ultrasound please tell ur previous menstrual history were they regular , at what interval did they come, was there any history of shortened cycles difference between conception dates & last menstrual date usually occurs in patients with cycles that occurred earlier than 21 days or later than 35 days please also provide ur usg report with dates of usg as expected dates calculated on the basis of usg differ in accuracy depending on timing of usg if expected date of 15 may is accurate then chances of conception in August r very less