Is it normal not to have a fetal heartbeat or fetal bud at six weeks of pregnancy?

Jun 20, 2025 Source: Cainiu Health
Dr. Zhang Lu
Introduction
It is necessary to determine whether the absence of fetal heartbeat and fetal bud at six weeks of pregnancy is normal based on the specific circumstances. If conception occurred later than expected, this may be normal. However, if no fetal heartbeat or fetal bud is detected in subsequent examinations, it may indicate an abnormality. During pregnancy, it is important to maintain a calm mindset and pay attention to proper nutrition to support the growth and development of the fetus.

  The absence of fetal heartbeat and fetal bud at six weeks of pregnancy can be normal depending on the specific circumstances. If conception occurred later than expected, this may be normal. However, if no fetal heartbeat or fetal bud is detected in subsequent examinations, it may indicate an abnormality. Detailed explanations are as follows:

  If a woman has irregular menstrual cycles or a longer cycle, ovulation may be delayed, which can result in conception occurring later than calculated based on the last menstrual period. As a result, at six weeks gestation, there may not yet be a detectable fetal heartbeat or fetal bud due to insufficient embryonic development time.

  However, if upon re-examination after an interval of 1-2 weeks there is still no progress, this may suggest an abnormality in embryonic development, such as an increased risk of spontaneous miscarriage, often accompanied by symptoms such as vaginal bleeding or abdominal pain. In such cases, the pregnant woman should promptly visit a regular hospital for examination and follow the doctor's guidance for appropriate treatment.

  During pregnancy, it is important to maintain a calm mindset and pay attention to nutritional intake, eating more foods rich in protein and vitamins, such as eggs, milk, and apples, to support the growth and development of the fetus.