Is it possible to tell the exact date of conception

Subtract days, which is 38 weeks, from your due date to know the date of conception. Your health care provider can help you determine your due date by using ultrasound pictures and charting the growth of your baby. Add 14 days to the start date of your last menstrual period. This should be your ovulation date. Conception occurs within 24 hours of ovulation. If your cycle is longer or shorter than 28 days, this calculation won't be entirely accurate. Track your ovulation for a precise conception date.

One way to track ovulation is by taking a basal temperature reading using a basal thermometer, which is more sensitive than an ordinary thermometer. Use our Pregnancy Calculator to calculate these dates for you. Calculating Gestational Age Last Menstrual Period If the mother has a regular period and knows the first day of her last menstrual period, gestational age can be calculated from this date. Calculating Conception Date In a Typical Pregnancy For a woman with a regular period, conception typically occurs about days after the first day of the last period.

Special Cases Women who undergo special procedures, such as artificial insemination or in vitro fertilization , typically know the exact date of conception. Calculating Due Date: Estimated Due Date Based on the last menstrual period, the estimated due date is 40 weeks from the first day of the period. Difficulties in Determining the Gestational Age Last Menstrual Period For women who have irregular menstrual periods or women who cannot remember the first day of their last menstrual period, it can be difficult to determine gestational age using this method.

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When Did I Conceive? Due Date Calculator Please select the first day of you last period You last period date:. Please select a date. How to Know When You Conceived.

Ovulation The first way to find out your conception date is to determine when you were last ovulating. Intercourse Another way to learn your conception date is to try to determine the last time you had sexual intercourse. Ultrasound The best way to determine your conception date is with a pregnancy confirmation ultrasound. Search for:.