Which symptom should never be dismissed during pregnancy without proper evaluation?

Dizziness when lying flat should never be dismissed during pregnancy without proper evaluation due to the potential implications it may have for both the mother and the fetus. This symptom can indicate more serious conditions such as supine hypotensive syndrome, where pressure from the uterus compresses the vena cava in a supine position, potentially leading to reduced blood flow back to the heart, resulting in symptoms like dizziness or even fainting.

Proper evaluation is essential to rule out serious complications such as anemia, dehydration, or cardiovascular issues, which could have adverse effects during pregnancy. Additionally, dizziness can also be a sign of an underlying condition that may require immediate attention, thus highlighting the importance of addressing this symptom seriously to ensure both maternal and fetal well-being.