"How was it in Mama's belly?" tells the story of life before birth. Even though most people say they can't remember, a lot happens during the nine months of pregnancy. As the baby develops, it already perceives what is happening around it. It feels influences from both inside and outside and reacts to them. This lovingly illustrated picture book conveys that experience. It is suitable for children aged 4 and up. Interactive pages encourage both children and reading adults to engage deeply with the prenatal period. The book is based on the insights of prenatal psychology. It accompanies children in their questions about where they come from and what it might have been like in the first place of their lives. For parents and professionals, it provides knowledge about the experiences and needs of the unborn child.