The fetus has arms and legs at 9 weeks of pregnancy. In weeks 6-7 the embryo takes on its first human form, with a large head that makes up nearly about half of the overall embryo. It is possible to distinguish the eyes, nose, mouth, fingers, and toes of the fetus, and all organs are developing, and the heart has formed. If the fetus is in the wrong position, or orientation inside the mother’s body, you may not be able to see all of the limbs on the ultrasound, which will need to be rechecked in a few days to make sure. It is also possible that because of irregular menstruation, the development time of the fetus is projected incorrectly, and the fetus has not actually reached nine weeks of development, and there will be no arms or legs visible. In either case, you should go to a regular hospital in time to have a professional doctor give you the relevant examination and make a clear diagnosis.