On Thursday of this week I had cortisone shot in my right shoulder... everything seemed okay till a few hours ago.. I had the strangest thing happen. I had gone to the bank, and then the store, and while in the store I began to get a yellow ring in my eyes...small at first and then bigger. I made it home,but my son said I was very pale... I ate something and rested a bit.. Now all is well, but I feel shaky ...I have a headache, what happened???? I do not have diabetes... I have been online for afew hours trying to find out what is going on.......