@Sister...Funny enough you should write this post now. I was just thinking in the wee hours about this. I went through menopause very early. I had had a hysterectomy when I was in my late twenties, so was obviously not menstruating. Shortly thereafter, I had one ovary out. All due to severe endometriosis and prolapse. At age 38 it was discovered that I was post menopausal. I had had no symptoms of hot flushes and so on, it just turned up in a routine blood test when we came to Australia and I sought out a GP to care for our family. Flash forward about twenty years later, I had been complaining to my doctor about night sweats, along with other problems too numerous to mention. Eventually I was diagnosed with a trio of autoimmune diseases, and in the process of all the tests to establish the internal involvement, the breast cancer was found on a CT scan. The night sweats were about two a night at this stage, but drenching. During AC chemo...a total nightmare, I might add, 56 days in hospital, including the original 18 days on my first admission when the cancer was found, the night sweats were joined by daytime ones as well. Up to a dozen times per 24 hours. There was great discussion between my various "ologists" as to the cause. A process called apoptosis was eventually the winner. Rapid apoptosis, which is the destruction of cells at a far more rapid rate than the normal occurs during chemo. The good guys and the bad (and the ugly). As each cell is obliterated the apoptosis (I love the POP part of the word, it gave me a word picture of the cancer cells exploding), released all sorts of toxins into the system which can cause all sorts of symptoms. Just to mention that I now have only the occasional night sweat and even then, only when it has been actually hot, and I put this down to a faulty thermostat now. I swing between been over hot to chilly and back again at the drop of a hat. I have also been on letrozole for nine months now.
