83 degrees in my apartment, 100 degrees outside and I'm cold?

That is odd.
Get tested...probably a simple flu...but better safe than sorry.

Fingers crossed 🙏🤞

Sending positive vibes.

Hope you feel better soon.🤒

2 months ago I had the worst flu like illness that I've had in my adult life. Lost nearly 10 pounds. Took 2 weeks to fully recover. I was cold and shivering in a locked car in the heat.
Tested for COVID and was negative. It was just some viral illness.
Hope that you feel better.