I am also having hot flashes and night sweats ever since my hysterectomy. When they added estrogen it got worse and also I started crying and being emotional and also cranky, like living with the seven dwarves!
I had to add estrogen very slowly and am now feeling a bit better. I am taking bioidentical homones which I think is the best thing.
Try switching to bioidentical. You should be able to take them and eventually balance estrogen and progesterone.
I'll have to see how it goes for me. Years ago I got hormone shots (estrogen) for my uterine abulation. They shot me into menopause symptoms and I started adding bioidentical progesterone and it took months but finally the hot flashes went away and I started to get out of the depression.
Read book by Dr John Lee or Suzanne Summers.
Hope this helps, think of me when you are awake sweating and boiling when temps are very low and you should be shivering under covers!
I'm there sista! Hopefully not forever.
(PS Was hoping you had an answer for me! I've heard Evening primrose oil and black cohash or other menopause supplements, so far no luck for me).