Hi there. Yes, I have experienced the same thing you are describing in your post. Mine occurred 2 years ago, started as a tender swollen lump near my anus (left side) and I thought it was due to hemroids or something. Then one day the pain got really bad, I applied a hot towel to the area and the pain suddenly went away, but when I turned on the light I noticed blood, pus, and foul smell on the towel. I consulted with my physician and it was an "anal abscess." he put me on a round of antibiotics, and everything went away. Yesterday, I noticed the same thing in the same area, and I believe its the same thing cuz I did notice some pus and blood. I am going to consult with a physician tomorrow cuz it recurred and could be an "anal fistula" both these things are not harmful, a fistula is when a tunnel is formed from the previous abscess to the anal canal, this can reinfect and usually required a minor surgery. I dont believe I have a fistula just a recurred abscess cuz I home-treated the discharge on the previous abscess (popped on its own) so perhaps all the contents did not empty, and it got reinfected. In short, whatever you have is not harmful, its rather common so just see a Dr. And you should be fine. Looks that you posted on 10/30, so you have prolly healed by now. Do follow-up, and let me know what happened. I am going to a family Dr. Tomm. But I am sure he'll give me antibiotics, but I do want to see a specialist.