Yes, I can understand that.
The dark bloody stool is concerning.
This can be due to a bleeding diverticula (which is a pocket in the left side of the colon). These can bleed quite briskly/heavily.
Bleeding can also be due to blood vessel malformations, infections, polyps or colitis (inflammation of the colon).
Slow bleeding and heavy bleeding can lead to a low blood count (hemoglobin) which can cause fatigue, shortness of breath, dizziness and pale appearance.
If he has not had a CBC (blood count done) he needs to have this done.
If the fatgue is a significant change today, he appears ill and continues to have bloody stool I would take him back to the emergency room. I would also take him in if he develops any dizziness or shortness of breath.
If he does not have any further bleeding, is drinking fluids and is acting like he has been over the last few weeks, it can likely wait until the am to see his regular doctor.
BUT, if he has any more bleeding I would take him in.
Feel free to ask any follow up questions you may have,
If you are satisfied with my help, please remember to click accept.
Edited by Dr. Abby on 6/1/2010 at 8:39 PM EST