I thought I'd make a space for allergy discussions...I think i may have discovered a new allergy - after drinking diet tonic water my throat appears to swell up, which isn't a lot of fun. then I remembered being given very strong squash as a kid, and it giving me breathing problems. So could I be allergic to something in diet drinks? what would this be? would this be a likely reaction?? Should I do anything specific about this? It's a little confusing...