Your recurrent symptoms after outside food may be due to infective gastroenteritis or an IBS flare, but repeated antibiotics such as Rifagut should be taken only after clinical review.
Because you have Hashimotoâs, dehydration and
thyroid status also matter.
I recommend an examination and stool tests if symptoms persist or recur.
Please consult or book on Practo so I can guide treatment safely.
Next Steps
For now use ORS, light meals, and avoid outside food and any trigger foods.