Need help, really bad allergic reaction... but to what?

Okay... early Saturday morning (probably 1 - 2 a.m.) my right nostril started to swell up and get blisters (small fluid filled bumps) on it. Saturday at some point I started having a hard time breathing. I feel my throat is swollen and when I try to breath it feels like someone is sitting on top of me and I cannot get enough air into my lungs. Today both nostrils are swollen, red with blisters inside and outside. I woke up this morning with three small blisters on my ear and it is also swollen and red. Friday night I was admitted into the ER for what we now know was kidney stones (one large one and six smaller ones.) with an infection all around it. I had a fever of 103.3 when we got in to the hospital and was shaking uncontrollably. Once admitted in the ER I had a CAT scan with an iodine injection (never had done before). I was also being given antibiotics through and IV and lots of other stuff I do not remember (pain meds for one). Anyways, I spent Friday night - Sunday early afternoon in the hospital. Mostly on antibiotics (IV), pain medication (tylenol and some IV meds) and I was given two bags of blood because I was anemic (I've been anemic my entire life and they took like a gazillion tubes of blood from me to test... so, no crap I needed blood). I wasn't too worried about my nose getting blistery and what not because that has happened plenty of times before. I am allergic to puffs tissue and if my nose comes into contact with it, it has that same reaction. But on my ear as well? And I wasn't any where NEAR puffs tissue, I didn't even use tissue... if I did blow my nose I would of just used TP like I always do. So, it's not that. The fact that it spread to my ear and my throat being swollen is not normal. Thursday, we did go to my husbands grandmothers for Thanksgiving (like we always do) but I didn't eat anything because I was sick (had the same fever that I had on Friday). I just sat on the couch the whole time. I can't think of anything that I did differently or touched that could of caused this reaction. My nose usually takes a day before it blisters after using a puffs so either it came from home, his grandmothers house or the hospital and I just reacted much more quickly. From Tuesday-Friday (before going to the hospital) I was sick. Fever, back pain, abdominal pain, nausea, dizziness, feeling weak, headache, etc. because of the infection being so bad. So, I spent all my time in bed. So... what could be causing this reaction? Can you be allergic to the iodine dye? Would it cause blistering?! The fact that it is spreading and not getting better by now is what is worrying me. Ask any questions and I'll answer to give more info.