Suggest Remedy For Abdominal Discomforts And Burps Inc Hild

My daughter who is 10 years old ...approx 100 lbs ...height is approx 4 foot 4 inches is experiencing sulfur burps and tummy discomfort...she tries to throw up but nothing but burps...i noticed this issue after we took her to a naturopathic doc in late december...is it bad bacteria doing this...cause i notice this happens when she doesnt drink enough water