Sorry you are still dealing with this Brian. As you know, my surgeon left my anus open. When I developed an abscess inside the anus post-op he was able to get in there with a suction tube and suction it out and I was then placed on antibiotics. It's best to check with the surgeon to see if you need oral antibiotics. Better to be safe than sorry.
From time to time I have some mucus but it is able to escape and, touch wood, no abscess problems.