Any thing I can do for early menopause due to hysterectomy?

I got a hysterectomy a few months ago and have ben on hormones ( Prempro ) for a little over a month now. I hate them they have all these side affects that are driving me nuts and I don't want to take them anymore. They give me cramps, nausea, depression and am really tired all the time and they also make me jumble my words some times. What can I do for hot flashes night sweats and mood swings?