A couple of days ago I received a huge swollen lip, which I think to be some airborne or food allergy. A day or so later, I now have a cold sore in the same spot. However, when it was swollen there was no redness or sign of a cold sore. Are they connected? And do you think it was an actual allergic reaction? The only thing I know I am allergic to is ceclor, and I have had testings in the past. What do you all think?