wow...good to hear other people had problems like this too....mainly I get HOT....feels like I think hot flashes would and maybe that is it but I didn't have them before surgery and this started right after. I sleep with a fan on and the blanket goes on and off all night as I vascillate. I don't have fever so I know that's not it. I'm about 2 weeks post op and starting to feel like I am over the hump with regard to surgery recovery.