 [ Symptoms ] do they always check 4 pregnancy when u go to the er second month wo a period but they said nothing 1 way or other  i went to er 4 vomitingsevere headache they gave me nausa pills said it was a virus [ Disease ] every time i have ever been they have tested me for pregnancy because of things like xrays and certain medications they also need to know in case you need a blood transfusion or other specific procedures