Dehydration during pregnancy can be concerning as it may affect both the mother and the baby's health. Key signs of dehydration include dry mouth, thirst, dark yellow urine, and fatigue. If you notice any of these symptoms, it’s important to drink plenty of fluids, especially water, and seek guidance from your GP or midwife. Pregnant women should aim for about 2 to 3 liters of fluids daily, depending on their activity level and the climate they live in. If you experience severe symptoms like dizziness or confusion, seek medical attention immediately.