Drink plenty of water, and lie on your side in a foetal position ,don't lie on your back or you may choke on your vomit if you are violently being sick. What did you eat? ,you should be over the worst in 24 hours or so if it's food poisoning, If you are still like this in 24 hours you might need to get to a doctor, as you might need them to take a sample of your shyt,thats real fun by the way, handing a bit of your shyt to a nurse. .I got it real bad from a dodgy kebab years back , I looked lean as fukk though after a week. My a$$hole though, couldn''t sit well in a chair for some time.