Karen,
I think BO has the longest lasting effects on the body because it is stored in the fat tissue, so it takes much longer than PM for the effects to subside, I have been on it for 17 months now so I suspect it would probably take about a year for my T to start to dominate the E production. Not an exact quote but Lotilus said, if BO were permanent then we wouldn't need HRT. That brought it into perspective. There are a couple of people on HRT that take BO and say it really helps balance things out for them.
I recently added a multi Glandular which includes Uterine tissue as well as heart liver and kidney. I have only been taking it a few days but it seems that it adds a calmness to me that is difficult to articulate in any other words, after 18 months I'll drop down on the BO reducing everything down to a maintenance level. Not sure what that will look like yet.