Thanks for posting your query.
With the available described symptoms, there appears to possibility of acute viral gastroenteritis
Presence of watery diarrhea, metallic odor and abdominal pain
suggest the diagnosis.
You should consult with internal medicine specialist/ gastroenterologist and should go for thorough check up. You should go for ultrasound
imaging, complete blood count
, renal function test and serum electrolytes.
You should maintain your hydration status by taking oral rehydrayion potassium rich solution.
You should take complete antibiotic course, probiotics, antispasmodics and muscle relaxants.
You should avoid milk amd all milk products for the coming 5-7 days.
Dr. Mayank Bhargava