Hi,
Blood in stools could be due to many reasons like hemorrhoids, fissures, polyps, IBD, diverticulosis and malignancy.
If the blood is bright red then the possible causes are hemorrhoids and fissures which are lesions lower down in the anal canal.
If the blood is darker or if there is associated mucus, then the source of bleeding is high up in the large bowel.
I have both crohns and colitis. I had same thing blood in stool and mucus, sharp pains they never got better and I ended up getting way, sick. Got inflimation tumors, lost 15 pounds of not doing anything. it was hell. I think you should scedule another appt. have another one.
when i was dx i was having lots of mucus. when i did have blood i would have pain in my lower stomach an i would have to go to the bathroom right away. my blood was on my poo. when i had my colon thingy they said i had the start of Colitis.