Dating pregnancy conception calculator

Posted by / 22-Aug-2017 10:51

Ultrasounds performed during the first 12 weeks of pregnancy are generally within 3 - 5 days of accuracy.

The most accurate time is between 8 and 11 weeks gestation.

If you have any questions about this, please feel free to talk to your sonographer or doctor about it.

Maura Shenker is a certified holistic nutritionist and health counselor who started her writing career in 2010.

However, the accuracy of the ultrasound examination is always dependent on the skill of the sonographer and the quality of the equipment.

Subtract 266 days, which is 38 weeks, from your due date to know the date of conception.This is because the fetus is growing so quickly that there is a big difference in size from week to week.Also the fetus cannot bend and twist too much yet, so the length of the body is fairly constant.Your health care provider can help you determine your due date by using ultrasound pictures and charting the growth of your baby. If your cycle is longer or shorter than 28 days, this calculation won't be entirely accurate.Add 14 days to the start date of your last menstrual period. Track your ovulation for a precise conception date.

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Ultrasounds performed after 22 weeks gestation cannot be used to estimate the due date of the baby because the size no longer reflects the age very well.

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