Hi Louise, I am in almost same situation as you, I had a total hysterectomy almost 5 years ago, but I retained my ovaries, within weeks of having my hysterectomy I started suffering awful insomnia, I had the problem that I just couldn't sleep wide awake all night till 6am then up at 8, it made me very unwell, never had a problem with sleep until the hysterectomy, 7 months post op my gp did a blood test that said I was menopausal I was 43 at that time, put me on estrogel, Over the last almost 5 years nothing worked and I tryed everything including changing to patches then back to gel up down the doses with no relief, don't know if you go on the hystersisters website it's very good, in the USA its common for women to use progesterone after a hysterectomy with or without ovaries I decided on there advice to buy otc progesterone, I did buy it from the USA, and honestly have to say for me it's helped with insomnia and anxiety, it's not the same as the prescription progesterone, I can now fall asleep by midnight and stay asleep for at least 5 hours which is a huge improvement for me, it may be worth you trying, my gp would not give me progesterone as he bluntly said I don't need it, I to had hysterectomy for huge fibriods I also would take them back if I'd of known how the hysterectomy was going to mess with my mind and body, I also found on higher doses of estrogen the insomnia got worse so did the hot sweats, I only wish now I'd tryed the otc progesterone sooner, not an instant cure but definitely helps. X