Hi Taz It's about two years since I last had a period, but it's difficult to say exactly as I had an endometrial ablation due to extremely heavy and prolonged bleeding, which made my periods extremely light and sporadic. I had perimenopausal symptoms (anxiety, hot flushes, mood swings, night sweats) for a good few years, but I didn't realise that's what it was at the time. I put off trying HRT as I thought you could only be on it for a few years and therefore were only delaying the symptoms. I now understand the benefits long term as well as for symptom relief from Dr Louise Newson's website. My main symptoms now are night sweats, heart palpitations, waking in the night, sore tingly hands at night, muscle pains, joint pains, no libido, irritable and low energy. I have read in numerous places it can take 3 months to take effect, but after two months there is no improvement. In the last couple of weeks my symptoms at night seem to have got worse. I am waking more often, more night sweats, more palpitations and back ache. I feel worse than I did before taking HRT.