Hello, thanks for your question today! I am Dr. Drew, and I am a licensed veterinarian. I'll be happy to help you in any way I can.
in cases of persistent blood in the stool, there may be some tests needed to identify the problem,
including endoscopy / colonoscopy, to obtain visual images of the intestinal lining, and to obtain biopsy samples for microscopic analysis.
possible issues could include inflammatory bowel disease, fiber-responsive colitis, food allergy, polyps or tumors (including cancer), or even something as simple as intestinal parasites such as whipworms.
If further testing is not available,
then a course of dewormer such as fenbendazole, plus a modified low-allergen or novel-protein prescription diet, would be a reasonable course of action,.
steroids rarely improve a situation like this so I'd not see the justification for further use of steroids,
but a pro-biotic would be reasonable to try.
veterinary pro-biotics such as Purina FortiFlora would be a good option,
a human pro-biotic could be used but is less than ideal.