I got my first cortisone shot in both knees two days ago. Yesterday, I looked like I got sunburned on my face, neck and arms. Plus they were hot. The redness in my arms is gone, but I still look flushed in the face and neck today. Also, I haven t felt well at all. I feel like I have the flu. Nausea, gas, burping, etc. Now tonight, I m having chest pains. They hurt across the front and back. My blood pressure is up as well. I take iodine for my thyroid. I had a cyst on it drained a few months ago. Thoughts?