I am having a CT scan on Friday as I am in constant pain mainly around and under my ribs on left hand side. I am constipated but I am dealing with this.I have been diagnosed with IBS and Diverticulitis in the past and have flare ups but not like or as long as this. I have had lots of blood .stool and urine tests even an ECG as I had bad chest pains at one point. On paper I am very healthy but of course I feel the worst now has I have lost 10lb in weight since August. I have stopped all biscuits,cake and bread so I suppose I will loose weight but so much? I am supposed to go away on holiday for a month to Australia and now am awaiting the results before I cancel. Feeling rock bottom. Does this sound like IBS?