It is understandable to be concerned about your baby's growth when experiencing a lack of appetite and difficulty with water intake during pregnancy. It is important to stay hydrated, so try sipping small amounts of water throughout the day rather than drinking large quantities at once. You can also try consuming foods with high water content, such as fruits and vegetables, to help maintain hydration levels. If you continue to struggle with vomiting or have concerns about your baby's growth, it is recommended to consult with your healthcare provider for further guidance and support. They may be able to provide additional strategies or recommend appropriate interventions to ensure both you and your baby are healthy during this crucial time.