Vomiting is kindof a red flag for IBS, but some people in a lot of pain may cause them to vomit. There is a grey line here, but its not an actual symptom of IBS.
You might read this on diagnosing.
The "severe chills with the attack" can be a nervous system responce.
If its IBS there are some things that can really help kids and adults to try.
So the new gi doctor has diagnosed IBS?
They should be able to tell if its the gallbladder or IBS really.
I am not a doctor. All information I present is for educational purposes only and should not be subsituted for the advise of a qualified health care provider.
Please make sure you have your symptoms diagnosed by a medical practitioner or a doctor.