Flu while pregnant? Help

Not exactly sure if it's the flu or not because I don't have a fever or body aches .. But I've been throwing up since 3am .. I don't think I even go half hour maybe sometimes longer without throwing up.. I can't even keep down water. At this point I'm pretty much throwing up stomach acid.
 Should I go into the Doctor to get an IV ? 
Or just keep trying to drink water.. ?

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