After pregnancy, women are prone to diarrhea because of the physiological decrease of body resistance and immunity. Diarrhea is usually caused by cold in the abdomen, bacterial infection, eating unclean food, etc. It is not directly related to fetal arrest, so diarrhea in early pregnancy is not a sign of fetal arrest. Diarrhea in early pregnancy is a problem of the digestive system, while fetal arrest is mainly caused by low progesterone in the pregnant woman or by a violent impact on the abdomen or a poor quality of the fertilized egg itself. Therefore, diarrhea in early pregnancy is not caused by fetal abortion, so pregnant women do not need to worry and stress too much. However, if the diarrhea in early pregnancy is serious, it may cause electrolyte disorders and may lead to fetal abortion and miscarriage. Therefore, although diarrhea in early pregnancy is not caused by fetal abortion, it should still be taken seriously and should be treated promptly. Because it is during pregnancy, you should pay special attention to the medication you take, and you should take it under the guidance of a clinician, not without permission. You need to go to the hospital for an ultrasound examination of the uterine appendages to see the condition of the gestational sac to determine whether it is fetal arrest.