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.
For anyone with anemia, drinking coffee/tea/red wine with a meal could be problematic in that it will reduce the iron absorbed from the food consumed. After a heavy meal the body is in the process of active digestion. Which means it requires a lot of blood supply to that area. One of the reasons people feel sleepy post lunch is because of this.