I'm concerned with what's going on with you. It sounds like you need to get to your doctor ASAP. I guess it depends on how severe your symptoms are, but you sound pretty sick.
My biggest thing is arthritis with its pain + nerve pain. And severe fatigue.
I hope you have a happy anniversary in spite of being sick. -Joy
After rereading, I think I missed the point of the question. I was thinking extraintestinal symptoms instead of complications. Obstruction and fistulas come to mind.