Probably not Burger King as food poisoning doesn't happen instantaneously like that (unless maybe if caused by a chemical, but if that were the case the whole restaurant would likely be sick). Norovirus is going around, or it could have been something you ate a day or two ago.
Food Safety Report: Burger King, Fleur Drive, Des Moines, IA, USA
Probably not Burger King as food poisoning doesn't happen instantaneously like that (unless maybe if caused by a chemical, but if that were the case the whole restaurant would likely be sick). Norovirus is going around, or it could have been something you ate a day or two ago.