I had a hysterectomy at age 28 and one ovary removed a year later, due to severe endometriosis and uterine prolapse. Forward to age 38, we had just arrived in Australia and I found a new family GP. She ran a series of blood tests, just to get an overall idea of my general health. Turns out I was Waaaay post menopausal...like years post...and didn't even know it. I had assumed that my solo remaining ovary had stepped up to the mark, but not so. Because of the lack of uterus, I hadn't had the usual irregular cycles, which might have given me a clue. Also no other problems such as hot flushes and so on. I wonder if I might have had a more stressful menopause had I actually known I was having one? Don't assume you'll have all these horrendous problems when your ovaries go...you might just breeze through it too.