You have to hold your urine for an abdominal ultrasound in early pregnancy, you do not need to hold your urine for a vaginal ultrasound, and you do not need to hold your urine for an ultrasound in mid to late pregnancy.
In the early stages of pregnancy, as the gestational sac is small, the uterus enlargement is not yet obvious, and the area around the uterus is covered by the bowel, you need to hold your urine to make the bladder area full so that you can see the area of the gestational sac through the abdominal ultrasound. In contrast, a vaginal ultrasound is performed by entering the probe directly from the woman’s vaginal area and does not require the holding of urine, which has to be emptied and then examined.
In the middle and late stages of pregnancy, the fetal uterus increases significantly and the fetus gradually develops and grows, at this time to do ultrasound does not need to hold urine, you can directly do the examination.
Whether or not to hold urine during pregnancy ultrasound depends mainly on the size of the pregnancy week and the ultrasound examination method, and it is recommended to follow the doctor’s instructions for the examination.