Pregnancy dating date conception
Not knowing it, however, will not affect how you determine your baby's gestational age or due date.
That is because gestational age is measured not by conception date, but by the date of your last period.
However, many women experience few early pregnancy symptoms.
If you are uncertain whether or not you are pregnant, take a home pregnancy test.
If your cycle is longer than 28 days, take the number 14 and add an additional day for each day your cycle is longer than 28 days.
An ultrasound may be able to tell you the date of conception within one week based on gestational age.