For about a week I've had stomac ache similar feeling I used to get just prior to diarrhea. I sit on the toilet however nothing comes out and the stomach ache still persists. when I do go to the bathroom my stools are dark and sticky and I never feel as though the entire stool came out. These symptoms have been going on for a week. 29 year old male 511' 250 lbs. I'm cop who sits in a patrol car for 12 hours. Not the worst eating habbits