Pregnancy conception dating

If you know or suspect your conception date, you may notice that it doesn't match up with how many weeks along you are.That is because gestational age is measured not by conception date, but by the date of your last period.About two weeks after you conceive, if you have a regular cycle, you may notice early pregnancy signs.

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It will, however, occur around 12 to 14 days before the expected date of your next period, which is the fixed part of your cycle as explained above.

Note that if your cycle lengths vary widely, this calculator will not be useful to you.

If you have a regular 28-day cycle, conception usually occurs about two weeks after the first day of your last period.

For example, if your period started on October 11th, conception would occur around October 25th.

While it may be fun to determine your conception date in order to know the exact moment your baby began to grow, knowing it is not medically necessary.

Your due date is typically determined from the first day of your last menstrual cycle and is only an estimate of when the baby will be born.To use the calculator to help predict when you may have conceived, do the following: If you have intercourse around days 12 to 14 of a 28-day cycle, those are your potential conception days.However, if your cycles are longer or shorter than 28 days, your ovulation and conception date will be sooner or later than days 12 to 14.Many women do not have an exact 28-day cycle and do not ovulate 14 days after the first day of their last period.If you have been charting your cycle and know how many days between periods, you should be able to determine ovulation.Understanding when conception may occur can help you in your quest to become pregnant, but will not affect the outcome of your pregnancy.

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