Stomach pain in early pregnancy may be a physiological phenomenon, or due to ectopic pregnancy, acute gastroenteritis and other diseases. 1. Physiological phenomenon: some women in the early stages of pregnancy will be due to increased secretion of stomach acid and the performance of stomach pain. Secondly, it may also be with the gradual growth and development of the embryo, the uterus continues to grow and cause the pulling pain, usually relatively mild, are normal physiological phenomena. 2. Ectopic pregnancy: the cause of this disease is mostly seen in tubal-related pathologies, such as tubal inflammation, dysplasia, history of pregnancy, etc., and secondly, it is also related to the failure of contraception, endocrine disorders, smoking, assisted reproduction technology and other reasons. Typical symptoms include menopause, vaginal bleeding, abdominal pain and so on, so the patient exists in the case of early pregnancy stomach pain. 3. Acute gastroenteritis: the disease may be caused by pathogenic microorganisms such as rotavirus, Escherichia coli and other infections, but it may also be caused by eating irritating food, alcoholism, seafood allergy, heavy metal poisoning and other reasons. Common symptoms include diarrhea, nausea, vomiting, and abdominal pain, and if you are suffering from acute gastroenteritis during the period of suspicion, you will experience early pregnancy stomach pain. It is recommended that women with stomach pain in early pregnancy go to the hospital and cooperate with the doctor to complete the relevant examinations to clarify the specific causes.