It is generally recommended to avoid sleeping on your belly during pregnancy, especially as you progress into the later stages. The weight of your growing uterus can put pressure on major blood vessels and restrict blood flow to the baby. However, if you find yourself unintentionally waking up on your belly, there is no need to panic. Your body has natural protective mechanisms that prevent excessive pressure on the baby. As long as you are comfortable and not experiencing any discomfort or pain, it is unlikely to cause harm. To ensure a more comfortable sleep position, try using pillows for support or consider investing in a pregnancy pillow designed to accommodate your changing body shape. If you have concerns or experience any unusual symptoms, it's always best to consult with your healthcare provider for personalized advice.