hate to tell you, I'm post menopause, and didn't start getting night sweats till I came of HRT, now I'm 59 and 11/12ths and still getting them. I was under a consultant when I was on HRT and he would have kept me on it, unfortunately I've had a couple of breast cysts so the advice was to come of it. I stand in front of an open bathroom window in the middle of most nights, silly thing is when I go to bed I'm frozen and take a water bottle with me!