Thank you for the query.
The most probable reason of your symptoms is gastrointestinal infection
due to food poisoning
. Usually it is caused by bacteria or viruses. Most of such infection does not need medical attention. However if diarrhea
lasts longer than 48 hours, stool tests should be done.
Whitish stringy things in the stool can be nothing more than undigested food parts due to accelerated stool passage. However it can be also due to pancreas
issues for example. Parasites should be ruled out as well.
I suggest you to visit your doctor, have blood work and stool tests done at first.
Hope this will help.