Yeah, I know I'm obsessed with charts, but could you chart your temperature maybe 4 times a day, for a few days? What you'd be looking for is two things:

Is the average much lower than what it is now?
Are there big swings?

The body feels cold when it's "central thermostat" is set higher than what the temperature actually is, and hot when the thermostat is higher than the reading. So, you get a chill before a fever, because the thermostat was raised, and you got cold before the body temp could be raised. Once the body temp and the thermostat are the same, you're not cold. Then, when the fever breaks, you sweat. Same thing, now the thermostat is set lower, back to normal, but you're still hot.

So, if you're cold, my guess is your thermostat is set high, and perhaps that will be evident if your temperature rises and you begin to feel okay.

Your body "wants" to be higher than 98.2. Perhaps it will be happier at 98.6.

This won't necessarily answer the question of why your body is not matching what its thermostat wants, but it might give you a sense of what is going on.

Good luck with this one. Wrap yourself up warmly.

LizaJane