Sadly, there are many women who find that some meno flushes etc never go away or only reduce a little. I'm 61, very post meno and 18 months without HRT. Tried 3 years without HRT in my early 50s and the flushes never subsided - actually I have no control over my thermostat generally which is horrid - really feel extremes of hot and cold rather badly.
I have found a high dose of Red Clover quite helpful and I have soya milk with my cereal in the morning. Magnesium has reduced my palpitations. Work stresses have made me quite miserable as well so I know this isn't helping.
If you have had a hysterectomy, then you could have had oestrogen since it was done and could still be on it now - actually good for your bones and heart. It might be worth asking if you can have a low dose of oestrogen - you may need to be referred to a gynae or meno clinic though. Go for it - if you don't try you'll never know. DG x