After one year without periods, you are through the menopause (as the perimenopause is called colloquially, also "the change,"and less so nowadays, "the climacteric" - and menopause itself is only the single day that signifies a full year without periods, as I understand it) and you are then, forever, post-menopause.
Some women, usually the 25% or so who had extremely difficult menopausal passages, remain highly symptomatic ongoingly. I have a friend in her late sixties who refuses to try HRT, and who has an enormous number of hot flushes every day still, I've forgotten the exact number.
It is a pity more doctors and women are unaware of skin changes to the genital region, as vaginal oestrogen (especially a cream like ovestin, which can be used on the vulva and around the clitoris and urethra, all of which have oestrogen receptors) helps with so many issues, aside from any perceived or not "dryness". I agree that this left unchecked can be very problematic, causing pain and discomfort, distress, and many UTIs, as years go on.