Hi Tired@
Sorry to hear you are having hot flushes and they are preventing you sleeping. When you say menopause has suddenly kicked in I presume you had a BSO (ovary removal) as well as TAH as this triggers sudden surgical menopause if you hadn't yet got there.
What was your cycle doing before you had the operation in terms of periods and symptoms and if you don't mind my asking, how old are you?
If you had the whole lot removed and you are under the average age of menopause of 51/52 then HRT (oestrogen only) is strongly advised by the medical profession to protect heart and bones as well as relieving symptoms.
Even if you just had your uterus removed, it sounds like your ovaries have failed suddenly giving rise to these symptoms - I have read that hysterectomy can trigger menopause in some women. Is there any reason why you do not want to try HRT? Maybe there is a medical reason? The good news is that in your position you would only need to take oestrogen - and replacing what is being lost from your body in as natural way as you can. Many women find the progestogen part of HRT the most problematic. oestrogen works very well to reduce night sweats in most women and to give you the sleep you need so much. You can reduce risks to your health through lidesrtyle changes in diet, exercise, body weight, smoking and alcohol intake - as well as reducing stress and relaxation as has been mentioned already!
There are alternatives to HRT but the herbal ones don't really work for severe symptoms.
Do tell us a bit more and then hopefully we can advise - it is so important to get enough sleep
Hurdity x