You are considered to be 'officially' through the menopause after not having had any periods for a year, and after another year your symptoms should be tailing off.
If you are still experiencing menopause-like symptoms (such as hot flushes or night sweats) after a lot longer then they may be due to other factors such as low iron levels, low thyroid function, low vit B12 or low vitamin D levels. It may be a good idea to ask your doctor to test for these just to rule them out.
If none of these affect you then the symptoms may be an indication that your nervous system has been overwhelmed at some point.
If you had a stressful menopause or have had any stress over the last few years this can have a huge impact on your nervous system which doesn't resolve itself.
Adrenal Stress causes many menopause like symptoms such as flushes and the usual menopause remedies often don't help.
If this is the case then it is important to do supportive work for the adrenals, such as taking magnesium and calming herbs such as Passiflora or Valerian.
Avoid, tea, coffee, high sugar foods or eating late in the evening to see if it helps. These can trigger symptoms such as hot flushes or make symptoms worse..
Consider acupuncture or reflexology as this can often help with mysterious flushes so worth looking into as well.
Also check your water intake. Flushes/sweats can dehydrate you very quickly and dehydration can affect the nervous system resulting in more flushes!