Diarrhea is not a sign of embryonic abortion. Embryonic abortion is caused by defects in the embryo itself, or by endocrine dysfunction in the pregnant woman, or by autoimmunity between the pregnant woman and the fetus, causing the embryo to stop developing or even to miscarry. When the stopped embryo is expelled from the body, abdominal pain and vaginal bleeding will occur, but most patients with fetal abortion actually have no obvious clinical symptoms and are not obviously related to diarrhea. Diarrhea is commonly caused by various pathogenic infections, but can also be seen in food poisoning, inflammatory bowel disease, including ulcerative colitis, allergies to various factors, such as food allergies, dysbiosis of the intestinal flora, and even functional disorders, like irritable bowel syndrome, which are common causes of diarrhea. But very severe diarrhea can indeed lead to dehydration and even electrolyte disturbances, which can affect the continued development of the fetus and even increase the risk of fetal abortion as well as miscarriage. Therefore, if you have diarrhea and the symptoms are severe, you should go to the hospital promptly for treatment.