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With the available described details, you are suffering from acute viral gastroenteritis
Viral gastroenteritis may persist for 3-5 days.
You should consult with internal medicine specialist / gastroenterologist and should go for thorough check up.
You should go for complete hemogram, serum electrolyte, renal function test.
You should take complete antibiotic course, antispasmodic, probiotics.
Avoid milk and all milk related products.
Dr. Mayank Bhargava