This is such a useful thread, discussing the interplay between anxiety/depression and hormone imbalance - it's such a tricky one. I too feel my anxiety has increased peri symptoms, that treating the anxiety has helped, rather than do it the other way around.
GRL - interestingly, like you, my issues only surfaced AFTER the stressfull period had ended, I had a clear road ahead and wham! I guess for me it was a type of burn out. My sister suffered terrible PND around 4 years ago and actually ended up coming back from Australia with her baby for me to help her - she eventually took AD's and anxiety medication and it got her out of a tricky place. I think she took the AD's for under a year but has used the anxiety medication on and off ever since, although very very rarely now. She gets very anxious if she thinks it is all 'coming back' - if she has a poor nights sleep or an off day, she is very much better though.
There is a lot of misunderstanding around mental health I feel and couple that with perimenopause and I think it is hard to unpick it all and find a Dr that understands the interplay, it sounds as if you have a good GP and specialist for menopause. All very positive, I do hope you feel a sustained change soon x