Hello and welcome.
Thank you for your query.
I understand your anxiety
and am here to help you.
Black stools are also called melena. Melena is stool with the presence of blood. When there is bleeding in the upper gastrointestinal tract (GIT), it mixes with the stool and turns it into a dark brown or blackish colour.
There could be many possibilities, and the pain near his rib cage
could also be an indication. Every time there is a flare-up, it could lead to the bleeding and even the pain.
The blood loss might have resulted in anaemia
and extreme weakness in him which is a symptom. Please schedule a visit with a doctor at the earliest and request for a blood work up and an endoscopy
I wish you and your husband lots of luck and the best in health. Feel free to contact us any time for further assistance.
Take care. Regards.