I am in Sweden for work and last night i started to feel really ill. Have been sick and vomiting with diarrhoea and stomach pains all night! Feel exhausted and have nothing left in my stomach.. Feel so sick and worried something serious such as listeria.. Since i am in Sweden and its Saturday not sure what to do! Should i wait and see if it goes away ( feel slightly better ) or should i call A&E? Have no fever but could this be listeria? Thanks!