I think kim123 might be right. A fungal infection is something I considered but never really took that seriously. I've been battling this flare for a few months, trying a lot of stuff and I'm finding that I'm either sensitive to sugar/carb stuff or yeast products, or both... and when I reduced these products, I've felt much less bloated and achy, so I'm thinking it is a yeast overgrowth and it can manifest itself in a variety of ways. It may help just to try a light version of the diet and supplements just to see if helps... and if it is dying off, then you might even feel worse.
Plus, yeast can proliferate with the use of antibiotics and steriods. I've been pretty intense with my probiotics and though they help, I think focusing on this issue is going to help. Maybe it can help you as well.