There are many reasons that stools could appear black or tarry with a foul smell, including eating certain foods or taking iron supplements. However, black stools can also be a result of bleeding, and the darker color indicates that the blood could be coming from a point in the upper gastrointestinal tract. When stools are black or tarry due to blood being present, it is called melena..
Because some conditions coincide with the presence of the disease, the following may be signs of leukemia: Anemia: A low red blood cell count. Red blood cells carry oxygen around the body. This condition may contribute to weakness, fatigue or shortness of breath.
Eating, physical activity, and stress can cause an increased WBC count. The WBC count tends to be lower in the morning and higher in the late afternoon. WBC counts are age-related. I would not be concerned until the results come back and you get your results. Pregnancy is associated with increased white blood cells.