When you’re going through a flare-up due to colitis, it’s not uncommon to suffer from rectal discomfort. You may feel pain or a burning sensation in the area because of this. Sometimes, you may even notice some bleeding, which happens when the ulcers in your stomach become irritated by the organic matter passing through it. Once these breaks open, the blood will mix in with your stool. Moreover, you may experience pain and soreness as a result of overstraining the muscles of your rectal.