@Nadi It's so interesting isn't it? I didn't have very heavy periods, and how would one know if you had high estrogen? My oncologist says they don't really understand the precise whys and hows of hot flushes. I am tempted to say that if most men had them the issues would have been solved years ago.Whoops, I just said it...
The psychologist I see specialises in breast cancer too. I'm not happy to hear that chemo hot flushes can go on for years! But some people's seem to resolve in a shorter time frame. I can only hope that I fall into the latter group because I can't see how I'm sleeping now is remotely sustainable.
I hope your flare up is very short lived. Take care. K