Why did i have a good bowl movement but it was full of bright red blood an know i can't go like every 3to 4 days but very little?

Please see doctor!: If you've had bright red blood in your stool, it really needs to be investigated. You could have bleeding hemorrhoids and constipation which aggravates them -- but you could also have other kinds of bleeding growths in your colon too. Bleeding higher up would more often be dark in color. Please don''t delay seeing your doctor about this.