I thought you would need hrt after having ovaries out.
My GP said that my ovaries just packed-in working when I was 42, and my meno symptoms started.
I was menopause-ignorant at the time and thought the symptoms were withdrawals from the drugs my doctor was weaning me of at the time.
I thought I was just super sensitive to the drug withdrawals, but hrt patch has helped loads.
As for anaemia, my mum had a total hyster and they gave her blood transfusions during her hospital stay as her severe bleeding had made her anaemic.
She took ages to recover but I remember her saying "I don't know I am born" when I asked her years after, how her hyster helped her. She had really heavy periods due to a large fibroid.
She was only on hrt for five years and then went onto natural stuff, but by then, her flushes had gone.