I keep throwing up everything i drink even water. my stomach hurts like i need to throw up but my stomach is empty. i ate some fast food burger an?

Need more info...: Duration of symptoms would be important to know here. If new, it could be food poisoning or viral gastroenteritis. If prolonged, it certainly needs a more urgent evaluation to rule out blockages in the GI tract or other important medical causes. Given lack of information, perhaps an urgent visit to your doctor or Urgent Care center can quickly get to the bottom of things.