A week ago, my wife suddenly had stomach cramps, accompanied by nausea, abdominal distension. My wife went for an ultrasound and found fluid in her abdomen. Now 1 day there is a cramping pain. Two months ago, I had a routine check-up and nothing abnormal was found. The doctor told me that my wife has abdominal cramps accompanied by nausea, what are the signs of the disease? What is the treatment, doctor?