Nausea is unreal -7 weeks 1 day

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Is it normal to only feel good when your eating? If I'm not even I have constant nausea that won't go away until I eat again. I can barely even drink water but still force it down. I am trying to get creative and eat jello , fruit or drink chicken broth in between large meals but already I'm so worried to gain too much weight. What can I do? Thanks ladies!