What is the reason for no embryo during pregnancy?

As we all know, once a woman becomes pregnant, her abdomen will grow bigger day by day. This is the most obvious physical condition of pregnancy, and the embryonic bud is an important indicator to judge whether the fetus is growing and developing normally in the early pregnancy. If no embryo is found by B-ultrasound after 49 days of pregnancy, the possibility of fetal demise should be considered. If fetal demise is diagnosed, the pregnancy should be terminated immediately to avoid harm to the pregnant mother.

1. What is the reason for no embryo during pregnancy?

1. The embryo bud is very small and invisible:

Because many pregnant women have a long menstrual cycle before pregnancy, menstrual disorders and other factors, which may lead to errors in the number of days of pregnancy. Some pregnant women have amenorrhea for 49 days, but that does not mean that the pregnancy is a full 49 days. Therefore, if no embryo is found during B-ultrasound at 7 weeks of pregnancy, it may be that the pregnancy is too short and the embryo has not yet grown. Pregnant women do not need to worry too much and can come back for a follow-up checkup after a week.

2. Fetal growth retardation:

If the test tube embryo does not develop, B-ultrasound will show that there is a gestational sac but no fetal heart or fetal bud, and there will be a small amount of vaginal bleeding. Therefore, if no embryo is seen during pregnancy, it may be a sign that the test tube embryo has already stopped growing and developing and needs to be aborted. The main reason for the cessation of embryonic development is the chromosomal abnormality of sperm and egg fusion, which is largely due to natural replacement. Pregnant women don't need to be too sad, they should take the initiative to do a good job of examination and prepare for the next pregnancy.

2. What does it mean if there is no embryo in pregnancy?

Early pregnancy refers to the period of pregnancy within 12 weeks of pregnancy. The test tube embryo will drastically change its development trend at this time. About half of women will experience nausea, vomiting, drooling, preference for sour food, aversion to greasy food, flatulence with burning sensation, upper abdominal distension, constipation and other symptoms during the early pregnancy period about 6 weeks after menstruation. These are called early pregnancy reactions. This type of early pregnancy reaction disappears on its own in about 12 weeks. The growth and development of the test tube embryo is as follows: the gestational sac is produced in 30-40 days, the embryonic bud and fetal heartbeat are produced in 40-50 days, and the fetal heartbeat is produced in 50-60 days. Generally, under normal development, fetal heart rate and cardiovascular fluctuations can be seen around 8 weeks of pregnancy.