Hello! I Am A 43 Year Old Female And Had

Hello! I am a 43 year old female and had an onset of nausea (no vomiting) this past Saturday night lasting through Sunday. Diarrhea started Sunday afternoon into Monday. No more loose stools or nausea, but I am experiencing significant abdominal bloating and feeling very full after eating anything more than a few plain crackers or a piece of toast. Cereal w/milk yesterday wasn't too bad but did leave me pretty full, much more than normal. I tried a piece of cheese yesterday (1 slice of Swiss) and felt terribly bloated afterward with a lot of stomach gurgling. Virus?? Something else? Thank you!