I'm trying to determine if I have a stomach bug or something more serious. I have 4 little kids at home so I don't want to go to the doctor if I don't have to. I woke up this morning with pretty moderate abdominal pain, I think originating in upper left and radiating down and to the right. It is sharp and stabbing, coming in waves. In between a peak of pain, its more crampy. Accompanied by diarrhea that has a few small black pieces, almost looking like seeds or coffee grounds. thanks