My operation was done for fistula in ano on 4th june 2011. but after 20 days, i am finding very bad smell in that part, where operation taken place. Daily I washed my that parts with warm water adding betadine or potassium permegnate. 5 days back, i found another swelling where the fistula was earlier and then two days later a lot of blood came from that swelling. I am feeling comfortable after operation but bad smell and operation injury still I found in the same condition. What I have to do now. Please suggest.