Yours symptoms are related to gastroenteritis
the acute infection of the intestines.
If you did not noticed mucus or blood, then, most probably the origin is of viral infection. At the case, you need to take lots of liquids, oral rehydration salts, tasectan to stop the diarrhea
Furthermore, I recommend to do the examination of the feces (coproculture, leucocytes
in feces, culture for candida, examination for ova/parasites).
Do not worry, as long as you find the right culprit and take the proper measurements, everything will be back to normal again.
All the best! Wish you health!