Love to know this myself. HRT seems to be a non- linear ride with periods of regression. I simply don't understand it. Any information I find regarding my looking for answers is apocryphal at best. I'm going to guess our answer will be the old standby of "hormones work differently for everyone. A very disastisfying answer...to be sure.. I feel your pain though, Angelique. The only thing I can suggest is your newest batch of spiro blows. I've found efficacy from different manufacturers to be all over the board. To the degree that on one batch, I started to grow more hair and get morning wood....yay!.....not! Once I got back on the old manufacturer, everything went back as it was. Till the boys are gone, I think mileage is going to be all over the damned place. None of this is easy. Sigh!