Have they checked your wife for Diverticulitis?
The most common symptom of diverticulitis is abdominal pain, tenderness around the left side of the lower abdomen. If there is an infection then nausea, vomiting, feeling hot while having no fever, cramping, and constipation may occur too. Diverticulitis worsens throughout the day, it starts as small pains and slowly turns into vomiting and possibly sharp pains.
My husband had it a couple of times and has to be careful not to eat too many things with seeds in it or nuts. Has she been eating anything unusual with seeds or nuts in it? Some folks are more sensative then others. Just something I happen to think of, so you could ask her Dr. to check. Hubby had to have a Ct scan done to detect it.
Wishing you and your wife well...JJ....