Thanks for posting your query.
With the available described symptoms, there may be possibilities of parasitic infestation and viral gastroenteritis
Presence of watery diarrhea
along body ache
and breathing difficulty suggests the diagnosis.
Few parasitic infestations may also cause respiratory symptoms.
You should consult with internal medicine specialist and should go for thorough check up.
You should also go for chest x ray
and stool examination for parasite ova.
You should avoid milk and all milk related products.
You should take deworming course, probiotics.
Dr. Mayank Bhargava