Wow Char....that sounds terrible! Have you had this type of thing happen before? I think I'd call the doctor so they can at least document it. I've never had that happen to me. I hope you're feeling better today.
One thought I had...going from no AC and warm to a room with AC and very cool could cause that reaction I'm thinking. Sometimes when I come inside from being outside and overheated the cool air seems colder than it actually is - just 'cause I'm so warm. Does that make any sense?
I do hope you're feeling better today.