It is very unusual to have bowel movement once a week. I am assuming here there you have a normal diet. You must have had an xray abdomen and ultrasound
immediately. The CT scan and ultrasound abdomen should be useful in picking this up.
Also an elevated WBC count
implies that you have an infection.
A regular diet with increased fiber and plenty of fluids will help constipation
some of your symptoms can also be a result of hypothyroidism
It is important that your investigation reports are looked into so that a clear picture of your condition can be seen.