You speak a lot of sense honeybun. Back in my 20s I suffered with anxiety when I started a new job. Used to dread Mondays etc. Back then I was able usually to talk myself around, or lift my mood by getting outside or spending time with friends etc.
But this hormonal anxiety/depression is a whole other ball game. It absolutely floors me and I am helpless when it strikes. I have fought it tooth and nail, but nothing works. It's weapon grade anxiety which actually feels like intense despair. So I'm afraid I would still happily trade the next 5 years of this, if I could fast forward to being over it. I genuinely would.
The only other time I have experienced it is when I had post natal depression, so I know it's caused by hormones.