Thank you very much for the useful information Laura.
IBS is actually a diagnosis of exclusion, which means all the possible organic causes of the symptoms you have need to be ruled out first by means of comprehensive clinical tests before attributing this to IBS (which is a functional disorder).
This cramping pain can be due to stomach ulcers, gastritis, circulation issues to the gut, chronic pancreatic inflammation, gall stones, and inflammatory bowel disease.
You need number of tests (including blood work as well as endoscopy) to look for all the possible causes that might be responsible for the symptoms you have.
If not already, you should get a referral to a Gastroenterologist and discuss all the details i have mentioned to chalk out further management plan that suits best to your needs.
Until then avoid large fatty and spicy meals.
And maintain adequate hydration.
I would have been worried too if I were at your place, but let me reassure you that this does not sound serious at all. It is a treatable condition and carries a good prognosis with appropriate management.
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