I started feeling "odd", then my palms started itching and got very red, the soles of my feet were itchy and red, hives on my lip and face. I felt kind of faint and a red, splotchy rash went up my arms. I know that it wasn't a bad reaction, but that they can get worse if you eat that food again. Shellfish allergies often come on in adulthood, and I know you can acquire other food allergies as an adult.
I'm having a lot of panic and anxiety. Thinking that if I eat anything at all I'm going to react and die.