It is not common for women to show a noticeable belly at 6 weeks of pregnancy, as the baby is still very small. However, every woman's body is different, and some may experience bloating or slight weight gain that can make the stomach appear larger. This could be due to hormonal changes, increased blood flow, or even constipation. If you are concerned about your symptoms or have any other questions, it is best to consult with your healthcare provider for personalized advice and reassurance.