Morning sickness advice!

So I'm constantly nauseated throughout the entire day, even when I sleep. It doesn't stop! I've only thrown up a few times. I use to drink water like a fish and as of right now it's making me puke it up. I drink about a bottle of Gatorade a day and eat less than 1,000 calories a day. I'm 7 weeks. Should I be concerned about not getting enough fluids?? advice please, first time mom over here haha.