Stomach pain, urge to go to the bathroom and vomiting: In the first case, the most common cause is acute gastroenteritis, which manifests itself as abdominal pain, diarrhea and nausea and vomiting. In the second case, it can be appendicitis, which first manifests as pain in the upper abdomen and around the umbilicus and then gradually shifts to pain in the right lower abdomen, which is often combined with nausea, vomiting and even the urge to defecate and go to the toilet. In the third case, we commonly see female patients with abdominal pain caused by inflammation in the pelvic cavity, and pelvic inflammation that also stimulates the rectum can cause the patient to want to go to the toilet, and there is also the case of pain that causes the patient to want to vomit.