all was normal for the first 6 days, slight swelling and redness at injection site. Woke in the morning of the 7th day with dizziness and when I opened my eyes they were jumping back and forth and stopped after about 30 -45 seconds,and my palpitations which I have been dealing with for a while now were bad and my temp was very low, 93. I went to the Er and they found nothing obviously wrong. I had not even considered it had been my vaccination as my arm looked totally clear the night before and there was no redness or swelling, so I did not think of mentioning it. On arriving home I ran my hand up my arm and discovered it was hot and upon inspection discovered it swollen and bright red! It is better today, the swelling has gone way down and the redness is subsiding. I have been applying topical Benadryl to the site. I do believe it was a late reaction to the vaccine. Unexpected and scary. I have not had a reaction to other vaccinations in the past but am concerened about future vaccinations