Is it normal to have this feeling when you want to vomit? What could it be?

Hello everyone… do you also have this when you sleep or when you wake up? Well, for me it happens quite often when I wake up. I get nauseous but I never have to throw up. I woke up because of this when I was sleeping and then I drank something straight away but it doesn't help at all. What can I do about it? I still have this but I don't have to throw up. Do you have this problem too? Is that normal?