Well, without a detailed clinical evaluation it would be difficult to determine the cause of your symptoms. Presence of fresh red blood in stools is known as haematochezia in medical terms and indicates a lower GI bleed like piles, rectal ulcers, fissures, fistulas etc. Rarely a few infections/ inflammations may also present with fresh blood in stools. I would suggest considering an evaluation by a gastroenterologist. After a cause is identified, it can be managed accordingly.
Hope this helps.
Without a complete clinical examination it is difficult to evaluate the correct cause. Cramps in relation to bright red rectal bleeding may be suggestive of a partial colonic obstruction and very rarely suggest cancer .The possibilities that may need to be considered include GI motility issues as seen in IBS, infections, inflammatory bowel diseases, growths/ masses etc. You should seek consultation from a gastroenterologist to consider the possibilities mentioned above. Have a fiber rich diet. Once a specific cause is identified, it can be managed accordingly.
Take care and regards!