Hi there, I had a vaginal hysterectomy,also left ovaries,it really was the best thing I ever did,only regret was not doing it sooner,as fibroids were making my life hell, I was up on my feet the next day,taking a shower etc,no pain whatsoever.
Sorry,I'm not on hrt so can't comment but as for post menopause etc,as the ovaries were left, I was still getting symptoms as if I were having a period,sore breasts,back,etc,every month,then the sore boobs would only be there every now and again,then no sore boobs at all but of course that's when the hot flushes started but they're bearable a pest but bearable.
All the best and don't worry, it's a very routine op and done vaginally really does make it all the easier to recover from