Adult male 42 vomiting all day, started for no reason, can't keep anything down chills no fever headache?

Virus setting in: Sounds like your have one of the many viruses that cause gastroenteritis (stomach "flu"). Right now lots of noravirus infection going around the country ( better known as cruise ship flu). Chills may indicate your temperature is about to go up, so monitor this. Try very tiny amounts of clear fluid at a time, and if you are not able to keep anything down in the next 12-24 hours, seek care.