Hey, NGNG, about 18 months ago or so, could have been earlier, I had an abscess recur, I was constantly getting them every 10 months or so, and I was treated successfully with Cipro/Flagyl. Prior to that though, I had an almighty abscess that was so painful I knew it wasn't a regular one. I examined myself with a mirror on the ground and I noticed this tinchy little "hole" right beside my anus and buttcheek so I prodded at it and I noticed discharge and a little bit of poop ...... I know, rotten! Right then I knew I had a fistula, I could also feel air pass through it when I farted and that was a ...... odd feeling to say the least, lol.
I eventually had the abscess lanced under anaesthetic and two seton put in for the fistula's which were awesome, no pain, but a constant, but very small discharge of puss, no poop because it was "healed" with surgery and anti-biotics. A seton basically makes sure your fistula/abscess never closes over to form another one, with a trade off of, as I said before, a small bit of discharge that can be managed with a bit of gauze that would last the day.
Again, this week, I noticed another abscess, my IBD nurse got me fast tracked (like right away, today) to see a doctor and he fast tracked me (tomorrow) for examination under anaesthetic with the probability of putting in a seton.
Moral of my ramblings, 90% of abscesses need surgery, some small ones will pop and anti-biotics will do the trick and if you leave it too long, you'll most likely develop a fistula.
Hope all goes well for you, I remember your name from the HealingWell forum and it seemed for you, when it rained, it bloody poured.