It is not uncommon for an ultrasound to show no visible signs of pregnancy at 10 weeks. This can happen due to various reasons such as the position of the fetus, the quality of the ultrasound machine, or even miscalculations in the gestational age. However, it is always best to consult with your healthcare provider for a more accurate assessment. They may recommend a follow-up ultrasound or other diagnostic tests to ensure everything is progressing normally. In some cases, a transvaginal ultrasound might provide clearer results than a traditional abdominal ultrasound. Remember that every pregnancy is unique and individual experiences may vary.