Bless you toffeecushion. I could have written your post. I can never decide if the physical symptoms bring on my anxiety or whether the anxiety causes the physical symptoms, but either way, it's pants. Like you, I hate the way you just don't know when it'll strike - makes me not want to plan anything in advance . Am becoming a right recluse!
More positively, since month two of HRT, the more normal days have outweighed the hormonal ones, which is good news. My problem seems to be when my own cycle clashes with the HRT ... That's when the crashing fatigue, headaches, anxiety etc all kick in. My doc has suggested I try Qlaira as it'll suppress my own cycle (unlike HRT) but I have decided to give the HRT three months trial at least. Do let me know how you get on with your saliva tests . Hang in there xxxx