I have had nausea with some vomiting at the onset, with diarrhea for 7 days. Fever and chills at the onset, now just chills and headache. Feels like something is stuck at the top of my stomach. Have taken Immodium AD, eaten cheese, macaroni and cheese, toast, scrambled eggs....always feel very hungry after bathroom events, but after I eat, I feel very sick on my stomach. Have been taking Zofran for nausea as needed. Please advise.