Like everyone else has said: YMMV with this.
My own personal experience was also a start on low dose and to be honest, I don't really remember much in the way of changes until after my endo increased my dose three months later.
I do remember being much happier and just a sense of peace (and relief?) after starting but I think, for me, it was more just the weight of actually starting being off of my shoulders more than the meds themselves.
The emotional changes really snuck up on me and they were subtle. Thought patterns, emotions etc. all felt perfectly normal to me once I realized what was going on but they weren't foreign like something brand new should feel. It was more like they were always there and I had just noticed them more than anything.