You need to know at what time the ultrasound is considered correct by the doctors. There are periods in which all pregnant women undergo ultrasound screening. The study helps to identify possible malformations. The doctor determines whether the size of the fetus corresponds to the gestational age, examines the placenta, uterus, and measures the heartbeat. Assesses the parameters of fetal development, excludes the development of pathologies. Screening is first performed at 11-14 weeks, then at 20-24, at 30-32 and at 36-37 weeks. It is at these times that the study is most informative. During the first diagnosis, such important data as the size of the fetal egg, how it is attached to the uterus, are determined. Ultrasound during pregnancy allows you to exclude deviations in the development of the child.
It is necessary to do it for up to 10 weeks only in special cases. Experts do not advise diagnosing in the early stages of pregnancy, if the doctor does not indicate such a need.