Hopping over from the Chronic Pain forum... just a quick question

I've been experiencing what seemed to be pretty random bouts of naucea over the last several months, always culminating in my tummy rejecting whatever was inside. I think I finally found a link to all of it, but I'm just not familiar enough with any kind of food intolerances or allergies to have any ideas about why this would cause it. Every single time, I was drinking red crystal light, either cherry limeaid flavor, fruit punch flavor, pomegranate flavor, or in december, there was cranberry diet sierra mist. I seem to be just fine with anything else diet, and dont seem to get nauceated from any of the other flavors that I like, of crystal light, but it looks like anything in the red variety, and my tummy will be very unhappy. So my question, is there a known dye that can cause these kind of issues, or perhaps another ingredient that might be common in all of these? I have a little bit of knowledge on food triggers for migrains, but as far as something that will make someone throwup every time they drink it, it's just kind of beyond me, or my other thought is, maybe I'm just loosing it, and need to start talking to a shrink (debatable lol).

Thanks for any input that you guys might have. I appreciate it, if I can rule it down to one thing, I'll be happy lol.

A thing I'd suggest is a diary, List all things you eat/drink and when the symptom started on the proper time and date. Once a week, look at the diary and pick something you have on it then eliminate. Do that for a few weeks, see if symptom went away, add it back. See if symptom came back, or never left. Keep doing that until you found your trigger.... its like a migrainine trigger, except it causes a different trigger