I have about the same fistula you have. It sounds like you should ask for Flagyl. It helps some and then possibly find out about Remicade. I had surgery for a rectal fistula about 20 years ago and they did cut my sphincter muscle, it was scary they did not know if I would have bowel control after surgery. Luckily I did!! Yes, you can have fistulas traveling throughout; a CT scan can determine that. You really sound like you need some medication. I don't recommend popping anything, ever! Be careful; let us know how your appt goes on Tuesday.