The reason for having an ultrasound when you are newly pregnant is that it allows detailed observation of the fetus, reduces the risk of internal bleeding and alleviates the pain of the pregnant woman. It is especially suitable for the examination of microscopic lesions such as the endometrium and follicular development, as well as for the observation of early ectopic pregnancies, and also for estimating the gestational age. The use of ultrasound does not increase the risk of miscarriage and also allows for the timely detection of problems that arise during pregnancy. Since the vagina is close to the uterus and ovaries and the probe of the cath lab is powerful, the images obtained are clearer and the resolution is higher, so that small lesions can be clearly observed and the blood flow to the uterus and ovaries can be detected, making the test results more accurate. A round or oval gestational sac can be seen roughly in the uterine cavity 35 days after the cessation of menstruation in women, and the germ and primordial heart tube boom are visible at 30 days of gestation. In addition, for women with unplanned pregnancies, ultrasound can reduce medical costs and provide a greater degree of assurance of a woman’s fertility.