Hi I'm Female 40 Years Old. I Have Swollen Legs

Hi I'm female 40 years old. I have swollen legs and hands with red patch all over my body. It started two days ago when I drank that alcohol free Mojhito drink. Within an half hour of drinking i was feeling extremely cold, constant vomitting, and legs and hands were swollen really quick. Doctors have told me it's food poison. But I'm still think it's more than that. First of all I had rice pudding in morning and followed by mojhito which is basically lime,syrup mint and water.it cant be just be that
Please help me