What symptom during pregnancy warrants immediate medical attention?

Severe headache that does not go away is a symptom during pregnancy that warrants immediate medical attention due to the potential for serious underlying conditions. One concern with persistent severe headaches is the possibility of gestational hypertension or preeclampsia, which can pose risks to both the mother and the fetus if not addressed promptly. These conditions often present with a severe headache, and they can affect blood pressure and overall health during pregnancy.

Meanwhile, the other symptoms listed, such as mild back pain, increased appetite, and fatigue after physical activity, are commonly experienced during pregnancy and typically do not signal an urgent medical situation. While these symptoms certainly merit attention in terms of overall pregnancy comfort and wellness, they do not usually indicate an immediate health risk in the way that a persistent severe headache might.