Hi, many thanks for the query!
Its not because of a different food style but because of ingestion of contaminated (infective) food material or unsterile water intake.
You need to do- CBC, Stool (Culture & Sensitivity).
Take anti-spasmodics (Dicyclomine
), Antibiotics, Antacids, Pre- & Pro-biotics with your doctor's opinion.
Drink plenty of (Boiled & Cooled) (Purified/Filtered) water.
Wish you a good health.