Do the nature of IBS flareups change over time? I have had flare ups, on and off, for probably 10 or more years. but this most recent flare up is different. It is lasting longer (now into about my 4th straight week of hell), the symptoms are different (more C than D), the pain is different (more constant) and even completely new symptoms (can actually feel the spasms in my colon). i am seeing a specialist, but man, i am freaking out. I feel like this must be something more catastrophic, and now am in a feedback loop where the more i am convinced, the more i feel the symptoms. but they feel so real....could this be caused by anxiety? Ugh.