Hi WelcomtoHCM
As you are caught in the rigmrol of atmospheric change from upset problem is not to be ruled out .
But you shold take care of the intake of lots of fluids and refill the defeciency of electrolytes you suffer by frequent poos
include weak tea with a little sugar, sports drinks such as Gatorade, flat soda pop (decaffeinated flavors such as ginger ale are best), and fruit juices .
Drink plenty of fluids. Consume two quarts (eight cups) of fluids a day, three quarts (12 cups) if you're running a
fever. Plain water lacks electrolytes
yoghurt can help produce lactic acid in your intestines, which can kill off the nasty bacteria and get you feeling better, faster.
Start semi liquid porridge when you recover .
you can take banana and curd , curd and thinly cooked rice for 2-3 days
Thats all you have to do.
And if required dont shirk from going to doc for guidance
hope this helps solve your query . Take care all the best
Don't hesitate to come back if have any further query