I haven't had a period for about 15 months and started HRT (Evorel 25 and Utrogestan with a 25 on/5 day off) 3 months ago.
My MH and mood improved almost immediately and I have felt so much better.
However on the nights I don't take Utrogestan my sleep is appalling and I can barely function the next day. So back to where I was before starting HRT.
I haven't had a bleed in any of the three cycles to date.