According to the report it is Proctitis which is an inflammation and infection of the rectum.
The biopsy was taken from other parts of the large bowel possibly to rule out other causes like IBD. Bleeding immediately after colonoscopy can be seen more commonly after the procedure due to mucosal injury and it's not serious.
Next Steps
Bleeding is commonly seen in IBD yet wait for the biopsy report to confirm the diagnosis.
Health Tips
Consume high fibre diet and stool softners. Don't strain while passing stools.