Same thing happened to me yesterday. I left church feeling cold, then got colder and colder as the night went on. Before long my teeth were chattering like a machine gun, and I could not stop it. I got up to go to the bathroom, and my knees were knocking so hard, it was all I could do to stand. By the time I got back to bed, a matter of a few feet, literally, I was hyperventlating like a race horse. Thank goodness I had my CPAP, I was able to gert my breating under control. My wife was sleeping under a sheet and one blanket. I was under a couple of blankets, and wearing a sweat suit.
I've pretty much just stayed home today. I haven't felt any better. I've called out work tomorrowk and have an appointment with my doctor frst thing in the morning.
I'm going back to bed.