No, transvaginal ultrasound offers no risk to the baby. The probe introduced to take the exam will not hurt the baby, which is well protected in the womb. Ultrasound also does not emit radiation, like the X-ray, and the high frequency waves emitted by the device do not harm the baby.
In addition to not causing risks for the baby, transvaginal ultrasound is essential to follow the development and health of the fetus, to detect malformations and identify signs of genetic diseasess, such as Down's syndrome.
At the 1st trimester of pregnancy, The main objective of the examination is to genetic anomalies. Transvaginal ultrasound can be performed between the 11th and 14th week of gestation, preferably between the 12th and 13th week.
The sensitivity of transvaginal ultrasonography to detect Down's syndrome is approximately 90% and about 60% of fetal malformations can be identified at this stage through examination.
The gynecologist will be able to clarify your doubts about transvaginal ultrasound and reassure you for the examination.