Pre-pregnancy will not have diarrhea symptoms, pregnancy will lead to a series of changes in the genitourinary system, early pregnancy may be affected by the body’s hormone levels resulting in a pregnancy reaction, causing nausea, vomiting, drowsiness, fatigue and other symptoms, will not lead to diarrhea, this digestive system symptoms. If diarrhea symptoms, consider whether there is indigestion, or gastrointestinal tract inflammation and other lesions, mild diarrhea symptoms can be adjusted through the diet, can be gradually recovered, serious should be timely rehydration to prevent dehydration. Simply from the symptoms can not confirm whether the pregnancy, need to carry out the appropriate auxiliary examination to determine whether the pregnancy, in the first trimester of pregnancy need to supplement folic acid, can prevent fetal neural tube malformation.