Salad Reaction: Nausea, Vomiting - Nuts,

I had the anything and everything salad with bleu cheese dressing, and a draft beer, rolls, and a few peanuts. I started feeling uncomfortable, weak, tired, and stomach extremely full and nauseated within a half hour after eating. Vomiting and diarhea started and ended within a few hours, but have been nauseated for 3 days. Not sure if it's flu or food poisoning. I was fine before I ate, and this came on suddenly after eating with no other warning. Diarrhea started within an hour after eating. | Symptoms: Diarrhea, Nausea, Vomiting, Weakness