Many moms experience this and feel some degree of sadness or outright depression. Talk to your practitioner, your partner, or a friend or family member.
The person performing the scan (sonographer) will look at these different shades to interpret the images.
Your first scan can be very exciting because it gives you a first glimpse of your baby.
In cases where the date of conception is known precisely, such as with in vitro fertilization, the EDD is calculated by adding 266 days to the date of conception. American College of Obstetricians and Gynecologists.
Ultrasound uses the size of the fetus to determine the gestational age (the time elapsed since the the first day of the last menstrual period).
The accuracy of the ultrasound estimate of the gestational age varies according to the gestational age.
"Ultrasound measurement of the embryo or fetus in the first trimester (up to and including 13 6/7 weeks of gestation) is the most accurate method to establish or confirm gestational age" .
If the doctor has any reason to suspect problems with the fetus, he may ask the technician to perform an advanced ultrasound.
In an advanced ultrasound, the doctor points out areas of concern and the technician pays particular attention to those area.
This ultrasound assesses potential problems with the development and anatomy of the baby's heart and diagnoses any suspected heart defects.