Usually within 72 hours, passage of gas and stool through the stoma begins. Initially the stool is liquid, gradually thickening as the patient begins to take solid foods.
Birds have cloacas. A combined liquid and solid waste disposal system. So... their "stool" is mixed with their urine, and comes out as droppings, its called guano.
Yes. Unless you have drunk a lot of black liquid (e.g. Guinness) last night, you may have internal bleeding and should contact a doctor or hospital immediately.