I have seen blood at end of stools from last week.i am constipated for two days and next day got heavy stool comes with urgently after that I see blood with in. In contipation day I feel a soft lump at anal opening. And I got burping from anus all time.got pain buttock pain while sitting.while passing stools there is no pain.i am always feels something in my anus.try to go motion did not come.