What symptom indicates potential complications that warrant immediate medical attention during pregnancy?

Severe abdominal pain or heavy bleeding are critical symptoms during pregnancy that warrant immediate medical attention due to their association with potential complications such as ectopic pregnancy, placental abruption, or miscarriage. These conditions can be life-threatening for both the mother and the fetus. Severe abdominal pain may indicate significant issues, and when combined with heavy bleeding, it signals the need for urgent evaluation and intervention by healthcare professionals.

On the other hand, mild nausea and fatigue are common experiences in pregnancy, particularly in the first trimester, and typically do not indicate serious complications. Frequent urination is also a normal physiological change that occurs as the uterus expands and pressures the bladder. Insomnia may be a challenge for many pregnant women, often related to hormonal changes, physical discomfort, and anxiety, but it is usually not a sign of a medical emergency. Thus, recognizing the severity of abdominal pain and bleeding is crucial in determining when to seek immediate medical care.