Just had a poo and when i whipped there was just blood now i have this hurting itching fill in my bum?

Blood in stool: Likely due to hemorrhoids. especially if stool was hard. Would consider keeping hydrate, ( 2.5 to 3 liters/ day water/gatorade), high fiber, oats ,lentils barley, brown rice 1 cup a day. For itching, .discomfort try sitz baths. Sit on doughnut( a rim pillow)A doctor can prescribe Anusol ( steroid) . f/u with doc if persists/recurs may consider colonoscopy, just to be safe.