The absence of fetal buds and a fetal heartbeat on the 40th day of pregnancy may be a normal phenomenon, or it may be a case of fetal arrest.
If a pregnant woman finds that there are no fetal buds or fetal heartbeat during her 40-day checkup, it may be due to the irregularity of her menstrual cycle or the late implantation of the fertilized egg, in which the embryo is small and the fetal buds and fetal heartbeat have not yet developed, so the fetal buds and fetal heartbeat cannot be monitored.
Pregnant women do not need to worry for the time being, you can check again after 50 days of pregnancy, if you see the fetal buds and the fetal heart is normal, if you still do not see the fetal buds and the fetal heart, there is a possibility of embryonic sterilizations, you need to do ultrasound, blood HCG, progesterone and other tests to make a clear diagnosis, and terminate the pregnancy in time if necessary.
If the woman’s menstrual cycle is 28 days and regular, pregnancy more than 40 days without fetal buds and fetal heart may occur in fetal arrest, need to do ultrasound, blood HCG, progesterone and other tests to clarify the diagnosis, if necessary, terminate the pregnancy in a timely manner.