Sonogram dating and birthdate who is ed from bachelorette dating
Based on this due date, a range of possible conception dates can be calculated.Ultrasound An ultrasound, on a basic level, uses sound waves to create images of internal body structures.In cases like these, one of the more accurate ways to estimate gestational age is through the use of an ultrasound.Due Date An estimated due date, usually based on a sonogram, is typically obtained from a healthcare provider during a prenatal visit.If the ultrasound date is within seven days of your LMP date, we would stick with your LMP date.Ultrasounds done later in the pregnancy are less accurate for dating, so if your due date is set in the first trimester, it shouldn't be changed. After all, unless you went the IVF-route, your physician has no way of knowing the exact time of conception.Because of this, pregnancy is calculated from the first day of your last menstrual period (or LMP). It can be pretty difficult to determine a due date using the date-of-last-period method for women with irregular cycles — which is why an ultrasound exam is often required to determine gestational age.
Ultrasounds can be used to measure a fetus as early as five or six weeks following the mother's last menstrual period.
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