My sixteen year old daughter has sudden onset of headache, upset stomach with stomach ache, vomiting and diarrhea, She is dizzy when she lays down and upon standing. She is 5 5 and weighs 115 pounds. She sees her pediatrician as needed for vaccines, school physicals, etc. The symptoms started approximately at 1:00a.m. this morning. She continues to be symptomatic. Please advise. Respectfully,