I think you should wait on the Remicade, especially since you don't know what you have yet. There are a number of meds out there to try before Remi. Have you tried 6mp yet. It is another big drug but I would recommend that before Remicade.
Also, have you tried taking Immodium yet. I know it sounds weird but it can help. I have been using it when in a flare and it makes a difference.