Yes. Yes. Yes.
I completely identify with what you describe. I always suffered with PMS but a after I turned 40 it started getting so much worse.
Every month I despised my DH and plotted to divorce him. I was snappy with our DCs, and frequently unfairly strict. I hated my Mum and avoided friends. I couldn't be arsed to do anything at all and would often just serve beans on toast for the DCs dinner. I was despondant and felt hopeless inside, and just felt like wasn't worth living?
Does this ring any bells?
Then one month, 2 years ago, the PMDD didn't disappear after my period started. It just stayed and stayed and I was in a really dark place.
My GP suggested trying an AD. I started on Sertraline but it massively increased my anxiety and gave me insomnia for the first time in my life. So I was switched to Amitriptyline because it aids sleep and is quite sedating (but I was still fine at work etc). It helped quite a lot, by making me feel slightly dreamy and detached. I simply was unable to get annoyed by anything much at all. But I gained a stone in weight as it just didn't bother me that my jeans were too tight. It probably made me far too laid back, looking back.
After 7 months I decided to stop taking it and felt fine for the next 3 months. Just mild PMS symptoms and I noticed my periods were much lighter and only lasting 2-3 days.
Then, out of the blue, the PMDD arrived back with a vengence, worse than before. That Xmas was dreadful, I was anxiety ridden, not sleeping, felt nothing for my DH. My GP referred me to a Menopause Clinic (I am in my early 40s).
They diagnosed me with early ovarian failure, which means I was still getting fairly regular periods but my hormones were fluctuating loads, hence the increased PMDD and intense anxiety.
They put me on HRT which didn't help very much. So I tried going back on the BCP (continuously) but with very mixed results. The first brand gave me continual spotting and I was still getting bouts of the PMDD symptoms. The next brand made me feel great for the first 3-4 weeks with no symptoms. But starting the 2nd pack all my symptoms came back and just got worse and worse. On day 10 of 2nd pack I felt so depressed and anxious that I spent the day in tears and scared my poor DH.
In panic I stopped taking them because I think I was reacting to the synthetic progesterone in the BCP which can cause severe depression/anxiety in some women. My long history of PMS and PND means I am very intolerant to progesterone, sadly.
Now I am back to taking HRT again but I am feeling very low. I'm seeing a very good specialist in March, Dr Annie Evans, who treats women for menstrual issues and menopause etc.
The last 2 years of my life have been a living Hell for much of the time and I am desperate to feel well again.