How long does it take to have a fetal heartbeat?

During pregnancy, color Doppler ultrasound examination can usually detect the fetal heartbeat around 7 weeks of pregnancy, confirming that the fetus is alive. After 12 weeks of pregnancy, the enlarged uterus will move from the pelvis to the abdomen, and the fetal heartbeat can be heard by palpating the abdomen. However, the younger the gestational age is, the greater the fetal activity is, and it may be difficult to hear the fetal heartbeat with a stethoscope. As the gestational age increases, the fetal heartbeat will become clearer through the stethoscope. Under normal circumstances, the fetal heartbeat frequency is between 110 and 170 beats/minute, which is faster than that of adults, and the fetal heart rate will accelerate after the baby moves.

Under normal circumstances, the fetal bud and fetal heartbeat usually appear in the early stages of pregnancy at 6-7 weeks of pregnancy, and the fetal heartbeat usually appears at 7-8 weeks of pregnancy. Therefore, if you want to know whether the embryonic development is normal in the early stages, you can judge by whether the size of the gestational sac is consistent with the number of days after menstruation. You can also indirectly judge whether the embryonic development is normal by seeing whether the fetus, fetal bud and fetal heartbeat appear at the corresponding time. Most of the time, the fetal heartbeat and fetal heartbeat appear at normal times, indicating that the embryo is developing well and bleeding and abdominal pain are not likely to occur at this time.

If bleeding, abdominal pain or the fetus is too small during early pregnancy, you must go to the hospital for appropriate examinations and medication. The initial corresponding examination is to go to the hospital outpatient department to draw blood for HCG and progesterone level tests. Through these two tests, the status of the test tube embryo can also be indirectly reflected. If abnormalities are found, pregnancy-preserving medication is needed.

This needs to be determined in combination with the normal physiological cycle of pregnant women. If the normal menstrual cycle is about 30 days, the gestational sac and yolk sac will usually be seen around 4 weeks of pregnancy, the test tube embryo will be seen at 5 weeks of pregnancy, and the fetal heartbeat will begin to be seen at 6 weeks of pregnancy. But we cannot generalize and we also need to refer to the normal menstrual cycle of pregnant women. If the normal menstrual cycle is more than a week early, then the pregnancy time will be relatively early, and the time of fetal heartbeat may also be early. If the menstrual cycle increases to more than one week, the time for B-ultrasound to detect the fetal heartbeat will also be delayed.