The best thing will be to see a doctor! - as soon as possible!
The next choice
will be to treat oneself! -
The dangerous part of diarrhoea
is from dehydration
(loss of fluids). Drink lot of fluids - water (with some sugar and salt is better), juice and so on. There are electrolytes preparations - ORS
(Oral Rehydration Solution) available over the counter, in most pharmacies. For each loose stool
, one may require approximately, a glass of fluids.
Anti-spasmodic (example hyoscine ) is very helpful for pain relief
Bowel binding agents are at times useful - but if it is bacterial infection, they can be bad by promoting the toxins to stay longer! Better taken on medical supervision