My Daughter Who Is 5 Years Old, Who Has Vomited

My daughter who is 5 years old, who has vomited 3 times in the past 4 hours. The first episode was during the dinner, she threw up whatever she ate at the time. We thought, as she had coughed up while eating, she may have vomited. After 1/2 an hour, she drank few sips of water, which she again threw up by coughing. Here the vomitus was combination of clear sticky liquid with slight yellow in color, after this she complained of stomach pain. We made her sleep, as it was too late. But now while in deep sleep, she unknowingly vomited. Here the vomitus was less and colorless liquid. This also occurred after coughing up. After this, we waked her up and took her to the rest room, where she insisted to urinate and she did it without any difficulty. I am panicked as to what to do if it occurs again. So, please suggest me what to do in this situation.