I get fever/chills when I eat something too greasy. Usually sipping water helps and if you can handle, maybe a few crackers. It tends to go away within a day or two. You may also want to consider calling your doctor, just to double check. Hope you begin to feel better soon and best wishes.

feel the same way right now,bloating, gas,constipated, my head hurts and that leads me to anxiety

When mine acts up I shake and break out in a sweat that would put any two hour exercise to shame and the pain is horrible, it can go on for a long time.. What works for me is I cut my diet down to bread, water, cream of wheat, and crackers. When the pain starts to subside I'll introduce something a little different. If it act's up I know I'm not ready and go back to the simple diet. I need to visit the Doctor and would suggest you do the same.. Be well..

I used to feel that way every time I ate. Sometimes I would be so hungry and literally as soon as I took a bite my IBS would start the painful party. Doc said that the entire system is connected so salivating and chewing etc can cause the chain reaction. I even lost 10 pounds one week becuase as soon as I went to eat or drink water I would be throw up. If it wasn't coming out one end it was the other. When you feel that bad and are shaking and weak and it carries on even if you go to the bathroom or if you are unable to go to the bathroom you do need to see a doctor. I have been hospitalized many times due to my IBS. They have put me on so many drugs anti-inflammants and even steriods to try and help me. Finally, I gave up the drugs had little effect and often had nasty side effects. I am happy to say that I am taking an all natural shake each morning now and I am as regular and health as Dr. OZ says people should be...no matter what I eat...this has never ever happened in my entire life!!!!!!!!!! I actually called my spouse in to have a look becuase I was that happy. He thought I was nuts but anyone who has had severe bowel troubles would understand the bliss of being free of the nightmare! I didn't want to try the shakes he nagged me and nagged me until I gave in. Now, I will never be without them, they would have to pry them out of my cold dead hand before I gave them up! I distribute them now becuase I want to help others find a healthy cure to an ailment that is so unbearable. I still get mild tummy aches when I eat greasy foods but I can digest things fine now and have not had an IBS attack in months!
I hope you feel better. I remember a lifetime of that and many many days on my side on the bathroom floor pray that God would make it stop. Finally, he sent me a cure:)

Maika
What does the shake consist of, or who sells it? Please tell me your secret.. I never in my life knew I could and would be laid out like this.