Hi Corrina, just on my lunch break so haven't got much time to reply but really didn't want to read and run.
I'm so sorry you're going through this, it's such a horrid condition with all the pain and difficulties with cleaning. Because it's an embarrassing location it's also really hard to explain to people so it does make you feel so alone, so talking to BMC on here really helped me.
As you've probably gathered from the thread, my seton was inserted in June 2016 after developing a fistula from an abscess in feb 2016 following the birth of my DS. It was replaced in October 2016 with a smaller seton and removed/laid open in Feb 2017.
Fortunately my seton wasn't as painful as BMC's. After a month or so I kind of got used to it, but it was a faff to clean, although way better than the daily dressings I'd been having to have prior to it. I did have huge anxiety as I was so scared of it getting worse and it demolished by body confidence which was already very low after giving birth.
After my fistula was 'laid open' in feb 2017 it took about 6 weeks to heal and since then, touch wood, I've been fistula free.
I still worry when I get minor pain from time to time, but I'm getting used to what pain is normal from my scar tissue now and starting to relax about it and think about it less and less. My dr did lots of checks and tests to put my mind at rest too, so do feel able to talk to your dr if anything worries you. Hopefully this shows you that things can and do get better 
If you have any questions, or need any practical tips please do ask us no matter how tmi you might think they are! Feel free to pm me if you'd rather.
And please, please don't feel alone, BMC was a huge support to me, I don't think she realises how much it helped to know she was there and actually understood the full practicalities of what I was going through. We're both here now to support you 
Speaking of which, BMC, I pm'ed you a couple of days ago to see how you are but now I can't seem to log into my inbox so can't see if you replied! So for now, how are you? And I'll try to regain my inbox tonight!