Hard to tell as I started having menopause-like symptoms in my mid to late 30s- heavy periods, red mist, hot flushes, bloating, several abdominal pain on day 3 of period, vaginal atrophy, pelvic floor issues, IBS - it turned out I had endometriosis, PCOS and large bilateral cysts.
After I had surgery, copper coil removed and put on the mini pill I had no symptoms until the age of 46/47 when I started to have low oestrogen symptoms vaginal atrophy/itching, less energy, brain fog. Went back on the combined pill for a couple of years and that sorted out those symptoms.
I've now (aged 49) been off the pill and have taken nothing for seven months as I wanted to see if my periods had naturally stopped and I was only allowed to take it up to age 50 anyway. No periods, no pain, no endo symptoms, no vaginal symptoms, no menopause symptoms at all apart from a little brain fog but I think that was stress/grief rather than menopause as it has got better. I'll see how I get on in another six months, but if I'm ok I don't think I'll bother with HRT unless things change or my bone density isn't as it should be. If it ain't broke don't fix it.