sorry.. alot for at least 2 days *
if you start puking and diarrhea'ing, a lot for at 4 2 days than id say yeah you most likely would have food poisoning.
but bloating and naseau are normal in pregnancy. but double vision idk what would cause that, call your doctor or try eyedrops or something..
i hope that helps you out, & i hope you start feeling better. trust me i know how it is..