I'm 58, male and I have diverticulosis, first diagnosed 1-1/2 yrs ago. Since then, I have had about three attacks. These were treated with antibiotics and I have learned what I can and can't eat. I'm controlling it. After the last attack, my GI doc sent me for CT Scan w/contrast of abdominal/pelvic area. Unexpectedly, a 6.5mm lesion was detected on the pancreas. I was supposed to have an endosonography this past Sunday. Saturday evening, soon after a big meal, I developed an aching in my right back, below shoulder blade, like where my kidney is. It persisted for several hours so I decided to retire early. Without warning, I began to feel chills and I could not get warm. I went straight to bed and under the covers but I began shaking violently almost. I could not get warm. I knew that I would soon begin a fever. I don't think I noticed that pain any more but I had a bad headache and dry, stuffy nose. Mostly, I just remember feeling hot, even though I was cold. This went on for about 12 hours. After the first four hours I just slept mostly. Early evening on Sunday, I felt a little weak but no pain or fever. What the heck???? I also have a history of sinusitis but no blocked sinuses or headaches or other pains today. Did I possibly have an attack of pancreatitis?