It is still possible to have an abortion without bleeding or abdominal pain. Embryonic abortion is most likely to occur within 12 weeks of pregnancy, i.e. early pregnancy, in the first trimester. In some cases, the ultrasound examination indicates that there is no heartbeat and there is no previous aura; in some cases, the first symptoms are vaginal bleeding, with or without fertility treatment, and then the growth of HCG and progesterone is not satisfactory, and the ultrasound indicates no significant change of the gestational sac, or no germ, or no heartbeat. Therefore, the diagnosis of abortion is not based on the presence of vaginal bleeding and abdominal pain, but on the basis of dynamic monitoring of blood HCG and progesterone and ultrasound to determine whether the embryo is growing with the gestational week. In short, some fetal stoppage is without any warning, that is to say, even if there is no vaginal bleeding or abdominal pain, the fetus may eventually stop, because most of the fetal stoppage occurs in the first trimester, so it is necessary to check the blood HCG and progesterone and ultrasound in early pregnancy, so that we can consider whether we need to keep the fetus as soon as possible according to the test results. For women with previous history of fetal abortion, it is recommended to keep the fetus as early as possible when you are pregnant again, and the time of keeping the fetus should be more than half a month beyond the last pregnancy week of fetal abortion, otherwise it is likely to happen again, but don’t be too nervous, regular maternity checkups are fine.