First off, most of the answers you get are gonna be WAY dirtier than mine! I'll leave that to others ;-)<br />
Sounds like you are allergic to something if your throat is swelling up.
There a medical condition that does that but I can't remember the name. Regis Philbin has it bad, that's where I heard of it. Check with a doctor.
Anaphylaxsis? If you're eating something new, cease & desist from eating it asap. You could die from this. See an allergist. You should probably carry an epi pen.
What are u eating?.Sounds like allergies to me and u need yo see uyour G/P