I am so glad you are now okay, and hope those aftereffects go away soon! That IPIR sounds like it was really scary, and that’s so good you were able make it to the phone and talk to shared solutions while it was happening. Please do check back in and let us know how you are doing. Hopefully you are now resting, but you know how to get ahold of me….let me know if I can do anything to help.
I have had two of those reactions. Both of them fairly recently. My doc said it happens and not to worry too much about it. My husband was home both times so I felt safe. He could see how flushed I got and how hard it was to breathe. It is really weird and very very uncomfortable. I have asthma and it is not the same. This felt like someone sitting on my chest and you just cannot get air in. It didn't last that long for me, about ten minutes. I didn't have any of the chills and such afterwards. I definitely don't like that feeling though. I am sorry you had this, it is really scary. Hang in there and keep us posted.
Love and prayers,