Funny you mention this b/c I've suddenly been dealing with the same thing! I've had the night thing going on for a while - but not as prolific as it is lately. I can just be sitting doing nothing and out of the blue I start with this heat wave in my body. I've got the fan going full blast at night freezing out my hubby and my little dogs are cuddling up next to me trying to stay warm but adding heat to my already hot bod. Then like you I get cold again...covers off, covers on...covers off, covers on. Shoot...here comes one now...power of suggestion or what?! ha! I don't want to take hormones either. I hope someone comes along with a good suggestion!