I reckon my flushes are worse in winter than summer as well. It's been pretty cold this last week so I am cold, have a hot shower before bed and snuggle up. Within 10 mins serious overheating and kick all the blankets off and I'm laying there naked in 3 degrees sweating! 10mins later back down to freezing, back under the blankets then repeat. Seems there is no in between. Stinks when you can't regulate your own body temperature. Can you take codeine? Mersyndol seems to be the only thing I can rely on to knock me out after about 3 nights of next to no sleep. Obviously can't live on it and I don't take it more than twice a week, but it may help occasionally just so you can get some rest. Fingers crossed for you lovely that it backs off soon.
xoxoxoxo