1 A doctor can often identify which nerve is pinched in the neck or lower back based on what portion of the patient's arm or leg is affected. 2  A pinched nerve in the wrist from carpal tunnel syndrome typically affects the thumb, index, and middle fingers.
It is never normal to have abdominal pain, to start with. And even less to have it regularly. Bowel movement after meals is relatively normal (of course, depending on frequency, intensity, etc.), as a consequence of something called the gastrocolic reflex. Your symptoms might suggest an enhanced/exaggerated gastrocolic reflex, that is not uncommon as part of, or in relation with, an irritable bowel syndrome.
Food Poisoning. If you develop stomach pain after eating rice as an isolated instance, you may have food poisoning. Food poisoning will cause stomach pain within two to four hours after eating rice that is contaminated with an infectious organism. Food poisoning symptoms include severe stomach pain, excessive vomiting, nausea and diarrhea. In some cases, food poisoning can cause a low-grade fever.