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calculate date conception

A 39-year-old female asked:
Dr. Michael Sparacino
36 years experience Family Medicine
See below: Subtract 3 months from your first day of your last menstrual period, then add 1 week.
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A 54-year-old member asked:
Dr. Alan Patterson
41 years experience Obstetrics and Gynecology
See your OB: Not a good situation, your OB can do an ultrasound for dating purposes and blood tests can be done on the baby after delivery and the 2 guys to determ ... Read More
A 51-year-old member asked:
Dr. Edward Jacobs
45 years experience Obstetrics and Gynecology
Depends: Conception usually occurs about 14 days prior to the onset of the next expected period. If the periods are 28 days apart, conception occurs around day ... Read More
A 44-year-old member asked:
Dr. Alan Patterson
41 years experience Obstetrics and Gynecology
38 weeks earlier: If your periods were every 28 days, your OB can help you figure it out that is part of your ob's job.
A 28-year-old female asked:
Dr. Jeffrey Juchau
32 years experience Family Medicine
Conception: It is not possible to calculate with certainty both due to your irregular periods and the limits of ultrasound dating, meaning it is always +/- at lea ... Read More
A 55-year-old member asked:
Dr. Barak Rosenn
38 years experience Maternal-Fetal Medicine
Use an app: There are many apps available where you can enter your due date and get the date of conception (look for "pregnancy wheel". Alternatively, if you know ... Read More
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A 50-year-old member asked:
Dr. Edward Jacobs
45 years experience Obstetrics and Gynecology
Naegle's rule: By universal convention, a pregnancy is dated in weeks since the date of the last menstrual period. The due date is 40 weeks from the first day of th ... Read More
A 49-year-old member asked:
Dr. Alan Patterson
41 years experience Obstetrics and Gynecology
Your OB can: Show you on an OB wheel you are due 38 weeks from your conception date if you were having 28 day cycles.
A 40-year-old member asked:
Dr. Alan Patterson
41 years experience Obstetrics and Gynecology
U are due: 38 weeks from the conception date, your OB can show you on your ob's pregnancy wheel, and I am sure your OB will get an ultrasound for dating and viab ... Read More
A 38-year-old female asked:
Dr. H. Bennett
16 years experience Obstetrics and Gynecology
Ultrasound: When you have an irregular menstrual cycle, it is very difficult to pinpoint your due date. Even if you are irregular, we would date your pregnancy b ... Read More
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