The doctor chooses from 2 methods:
• Transabdominal – the examination is carried out using an external sensor through a small layer of a special gel applied to the woman’s abdomen. The main condition for the procedure is a full bladder. 30-60 minutes before the ultrasound, a woman should drink 1-1.5 liters of non-carbonated liquid and not urinate;
• Transvaginal – examination takes place using a vaginal sensor – transducer, inserted into the vagina. This type of ultrasound does not require special preparation. You just need to empty your bladder immediately before the procedure.
Basically, the examination is carried out using the abdominal method. It happens that in the early stages the fetus is poorly visualized, so they proceed to examination through the vagina.