Diarrhea for 75 days now.No pain,bloating,loss of appetite or weight,etc.etc. Am scheduled for 1st colonoscopy next week. 2 stool tests & blood work all negative. Am almost 68,diabetic ( good sugars ) on 40 units insulin nightly. Am really worried. Have searched web ad nauseum & doesn't sound good,even though pain is usually felt in most cases.Female with no family history of any of this.