It is generally safe to sleep on your stomach during the early stages of pregnancy, including at six weeks. However, as your belly grows and the uterus expands, it is recommended to avoid sleeping on your stomach to prevent discomfort and potential harm to the baby. While there is no specific risk associated with laying on your hands, it's best to gradually transition to a side-sleeping position for better blood circulation and support for your growing belly. Using pillows or pregnancy support cushions can help you find a comfortable position. If you have any concerns or experience discomfort while sleeping, consult with your healthcare provider for personalized advice.