What does it mean to see a fluid dark area below the gestational sac?

Generally speaking, the presence of a hypoechoic (fluid-filled) area below the gestational sac indicates blood accumulation beneath the sac, which may suggest that the pregnant woman is experiencing threatened miscarriage. It is recommended that she receive prompt treatment to preserve the pregnancy. The detailed analysis is as follows:

Under normal circumstances, there should be no blood accumulation within the uterine cavity. However, if a pregnant woman experiences a threatened miscarriage during early pregnancy, a small amount of blood may appear around the gestational sac. During ultrasound examination, this will manifest as a distinct hypoechoic area beneath the gestational sac. In such cases, active intervention to maintain the pregnancy is advised. Under medical supervision, the patient may take medications such as dydrogesterone tablets or progesterone soft capsules, or receive intramuscular injections of progesterone solution. Additionally, bed rest is essential—physical activity should be minimized, and staying up late should be avoided to prevent worsening of the condition.

During treatment, patients should avoid consuming spicy or irritating foods and instead follow a light diet, incorporating appropriate amounts of fresh vegetables and fruits. Monitor vaginal bleeding regularly and undergo ultrasound follow-ups every two weeks. If bleeding increases or the hypoechoic area enlarges, immediate hospitalization and further treatment are necessary.