How long should I allow vomiting before seeking immediate medical help? Is it worth night ER visit or is afternoon doctor ok? I have had trouble off and on for two weeks. An urgent care doctor gave me anti nausea pills. Tonight I have been vomiting off an

It. It is worth an er visit to get help and see a doctor. It is obvious that you are suffering from an infection and that your body is trying to fight it off. The combination of vomit and diarrhea will leave you very dehydrated by morning (this will make you more nauseous), and you may be too fatigued, weak and ill to get help. If you find that you are too weak, dizzy or unable to focus due to nausea and vomiting, call a friend/family to get you to the emergency room. Otherwise, call 911.