Thank you for the query.
Such symptoms are most commonly caused by gastrointestinal infection
. Shivering and cold usually associate fever what is characteristic for an infection. Due to dehydration
headache and weakness can appear.
Usually such infection does not need medical attention and heals by its own. However is diarrhea
or other symptoms will last longer than 48 hours, you should visit your doctor and have stool tests done.
In a meanwhile please avoid any foods for a day. Drink plenty of liquids. Start probiotic
Hope this will help.