Went 2 dr for gas pain but cant pass much gas & bloody mucus w/no stool. said it is constipation but i'm still worried. could it be something worse?

Gastroenterologist: Since you're experiencing abdominal distress, passing bloody mucus, but are unable to have a bowel movement your symptoms are concerning and a gastroenterologist is best qualified to evaluate you. Possibilities include mucus colitis with predominant constipation, inflammatory bowel disease, incomplete intestinal obstruction or proctitis. Abdominal distension or vomiting would be very serious signs