I had a complete abdominal hysterectomy due to cancer, heck, I didn't know I was going thru menopause, except for a few flashes and I have them periodically still, but, it is not bad, it beats the monthly periods, but I am hot blooded anyway.
It does sound like you are menapausal but as patty said, couldn't you have had menapause after your hysterectomy. Did you have a complete hysterectomy? I would check with your Dr.
Sincerely,
sandy