It is possible to have a vaginal ultrasound in early pregnancy. Vaginal ultrasound can detect intrauterine pregnancy earlier than transabdominal ultrasound. In addition, a condom is used on the outside of the vaginal probe to prevent retrograde infection. In addition, vaginal ultrasound is more gentle and will not cause uterine bleeding, lower abdominal discomfort, and other pre-miscarriages. In addition to ultrasound in early pregnancy to determine intrauterine pregnancy and whether the embryo is developing normally, you should have regular pregnancy tests after pregnancy. At around 12 weeks of pregnancy, a transabdominal ultrasound is needed to determine whether the development of the fetus is consistent with the gestational week on the one hand; on the other hand, an NT test is needed, the main purpose of which is to prevent the occurrence of fetal anomalies. At around 24-26 weeks, a systematic ultrasound of the fetus as well as an ultrasound of the fetal heart is required.