After the 10th week of pregnancy, the embryo has already developed into a human form, so theoretically it is not easy to have an embryonic abortion. However, in a very small number of women, fetal abortion may occur, but the probability is not very high. At about 50 days of gestation, the gestational sac will have a germ and a primitive heartbeat, and at 9 weeks of gestation, the embryo will have taken its first human form. At this time, the gestational sac enters a relatively stable stage, so it is not easy to experience abortion at 10 weeks of gestation. However, there are many reasons that can cause fetal arrest, such as external stimuli, problems with the embryo itself, chromosomal abnormalities in both spouses, etc., which may cause the fetus to stop developing, so fetal arrest may still occur in the 10th week of pregnancy. For example, if a woman suffers a severe trauma or has a lot of mood swings during the 10th week of pregnancy, which affects the secretion of progesterone and HCG levels, then it can also cause fetal abortion. If the embryo itself is not developing well, even after 10 weeks of pregnancy, there is still a possibility of miscarriage due to fetal abortion, and chromosomal abnormalities in one of the spouses may also cause fetal abortion. Although the phenomenon of fetal abortion is not likely to occur after 10 weeks of pregnancy, women should pay special attention to strengthen nutrition, pay attention to rest, and do prenatal checkups on time to avoid the phenomenon of fetal abortion as much as possible.