Every time I get "post-exertional malaise" and every time I get that flu-like feeling. I get all the symptoms of a fever, chills (with sweats when it "breaks"), aches, sick feeling, etc. My husband says my forehead even feels warm to the touch, and he can tell when my "fever" is up by feel. But if I take my temperature, it is often below normal. Actually, my temperature runs a couple of degrees low all the time, so I've wondered if maybe 97.6 is feverish for me.
I just call it a "pseudo fever" and figure it's just another oddity of this disease. I don't even mention it to doctors anymore, because it's one of those things that seems to convince them I'm a nutcase.
I hate the chills. It can be 88 degrees F (31C) out and I'm under 3 blankets shivering. Then it suddenly breaks and I'm drenched in sweat, clothes soaked, throwing off covers and sweaters. Yuck! I've been doing that all this week. I sure hope yours passes quickly. Sending virtual tea and sympathy.