Oh, Mountaingem, you certainly have it all going on there :-( Are you having urinary problems at all, like UTIs? I had an ovarian cyst years ago, pre Crohn's, and it caused me a lot of problems in that area. In fact, they were investigating the possibilities of another cyst when they discovered the Crohn's.
It wouldn't surprise me if the cyst is related to your current flare. Just before my surgery, I had a clear colonoscopy and an MRI which showed a fistula but not inflammation. The only abnormal thing was my white cell count. They found the inflammation when they operated to remove the fistula.
I hope they can get this sorted out as soon as for you. Chin up, love xxx