I know this is a silly question but I am not very well and cannot work out whether I am ill because of eating something that disagreed with me and brought on symptoms, or I have a virus. The symptoms I am having are aching bones/muscles, feeling hot and cold, nausea, lethargy/fatigue and trips to the loo. I don't think I have a temperature. However, all these were/are symptoms I had/have in one form or another especially pre-diagnosis. The only culprit could be some cambozola cheese that I ate yesterday as an experiment. I have not had a virus since diagnosis so this is new territory for me. I have taken to my bed as I feel so wretched. Does anyone know how to distinguish between the two.