I Had A Bowel Movement, And The Stool Seemed, I

I had a bowel movement, and the stool seemed, I guess, moldy? Not so much so that it was jarring but almost as if it had been there for a while. I thought it was fine since I had been on fiber supplements that caused me to have less bowel movements, so I stopped taking them a few days ago, but once I wiped there was a small yet noticeable amount of blood, it was a light red, and I think it could also be a hemarrhoid as my bottom has been rather itchy for a few days, but I'm not sure. I couldn't feel any lump or anything around my anus, so if it is a hemarrhoid it must be internal, but I really don't know.