Hi My Daughterv7 Yrs Old Is Suffering From Stomach Pain

Hi my daughterv7 yrs old is suffering from stomach pain for the past two days and from today morning she has started loose watery tools for more than 10 times. She is also vomiting now . I don't know what to do ? Pls help me. Now I hv gvn Her drotaverine 40 mg b coz I remember last time doc have the same medication when my elder one was sick with same symptoms.