The chances of fetal arrest after five months are not high, but we do not rule out the possibility of accidents, do not take it lightly during pregnancy. Five months of pregnancy into the stage of mid-pregnancy, the placenta has been formed, the placenta blood flow is relatively rich, the fetus in the uterus is more stable, there is also obvious fetal movement, the chances of occurrence of fetal arrest is relatively small. Although the chances of fetal arrest in the fifth month of pregnancy are relatively small, it is not absolutely safe, during pregnancy there are strenuous exercise, long-term exposure to radioactive substances, maternal viral infections, endocrine disorders, etc., may also occur in the middle of pregnancy. Fetal termination in mid-pregnancy may have symptoms such as vaginal bleeding, abdominal pain, cessation of fetal movement, etc. Whether or not the fetus has been terminated should be determined by ultrasound examination in the hospital. After pregnancy, you should have regular pregnancy checkups to know if the fetus is developing normally.