Fetus images produced by 2D ultrasound devices are ambiguous and lack precision. This led to the need for offering a 3D visualization of the fetus, which allows visualizing width, height, and angle, in order to get additional information about the fetus, and detect fetus abnormalities. We explain in this paper our method in producing 3D models of the fetus from 2D images using a computer system without the need for changing the 2D imaging devices, and without using position sensors. Our method is based on passing the probe over the pregnant woman's abdomen and make a manual scan for the entire body of the fetus from top of the head till the bottom of his feet, then it saves this scan as a video clip then send, it to the computer which segments the video into multiple images which are saved and later processed using digital processing principles of images. Then these processed images are reconstructed to produce the volume matrix and then display it in a 3D form using 3D model construction methods. We applied our software on various fetuses of different ages and got volume images which are considered good in comparison with the images offered by currently available systems and devices. The precision of the images we got, differs according to the change in fetus pose, amniotic liquid, and fetus size, The obstetrician or gynecologist can retrieve more precise details by changing the angle and displaying volume images of certain part of the fetus body.