Regular vacation refers to menstruation. It is not easy to determine the chances of getting pregnant with a stomach ache without menstruation, it may be pregnant, it may be PMS, and it may be caused by menstrual disorders combined with appendicitis and other diseases. 1. pregnancy: pregnancy is pregnancy, pregnancy can cause women to appear stomach pain without menstruation performance, it is not easy to determine this symptom is the probability of pregnancy is how much, you can be sure that this symptom is the possibility of pregnancy, and if the symptoms of stomach pain, it is recommended to immediately consult the doctor to rule out the possibility of preeclampsia or ectopic pregnancy. 2. Premenstrual Syndrome (PMS): PMS may be accompanied by stomach pain and delayed menstruation, usually for no more than 7 days. In addition, patients may experience breast tenderness and swelling, edema, nausea, vomiting, dizziness, depression, anxiety and other symptoms. 3. Menstrual disorders combined with appendicitis: if the recent stress, mental tension, may also lead to menstrual disorders, manifested in delayed menstruation, if then combined with appendicitis and other diseases, the patient may appear stomach pain without menstruation performance. In addition to the above factors, other causes can also lead to stomach pain without menstruation symptoms, it is recommended to consult a doctor in time to identify the cause and ask the doctor to deal with it.