Thank you for your comments. I'm sorry to hear that you are having similar troubles! I completely understand the difference from feeling "normal stress" and when something is amiss - it feels different.  Severe pms here in North America is treated by most doctors with anti-depressants and birth control pills!  

A couple things I can mention that have helped me and that I will be blogging about in the near future:  

Progesterone for anxiety.  If you look at symptoms of low progesterone - anxiety is at the top!  I wish more doctors were in tune to the connection!  There is no doubt in my mind that the panic attack I suffered was due to my lack of progesterone - now that I've been back on my progesterone for almost one entire cycle I am feeling back to normal.  I also experienced postpartum anxiety after the birth of my 3rd baby which was again solved by bio-identical progesterone.  I had terrible PMS for which I was offered anti-depressants and birth control pills - in the end balancing my hormones with progesterone completely eliminated the PMS.  I have used compounded progesterone cream for years and still do but after that panic attack my doctor prescribed bio-identical progesterone capsules for me to keep on hand in case of future panic feelings (they are faster acting and are processed through the liver so have a slightly sedative affect which isn't such a bad thing when you're not in a "calm" state!). Watch for a future blog post.  

I have a Magnesium expert going to be guest blogging a series of articles one of which is going to be specifically about the role of Magnesium deficiency in PMS!  I know that nutrition changes, supplements and exercise are enough to allow some women to achieve balance!   

Definitely charting your symptoms throughout the month will give you a really good visual picture of whether your anxiety is cyclical and gives you something tangible to take to a doctor. 
Here's a link to a chart from Dr. John Lee's website: <a href="http://www.hormonesoup.com/wp-content/uploads/2012/09/Symptom-Chart-Dr.-John-Lees-Hormone-Balance-Made-Simple.pdf" title="Dr. John Lee's Symptom Chart" target="_blank" rel="nofollow"> Dr. John Lee's Symptom Chart</a>
Here's another link to a chart from Centre for Menstrual Cycle and Ovulation Research - it's quite a bit different and has a place to put your supplements, etc. <a href="http://www.cemcor.ubc.ca/files/uploads/Menstrual_Cycle_Diary_with_treatments.pdf" title="CeMCOR Symptom Chart" target="_blank" rel="nofollow">CeMCOR Symptom Chart</a>

If you are considering progesterone I'd first contact a compounding pharmacy - Here's one in London England called <a href="http://www.specialist-pharmacy.com/" title="Specialist Pharmacy in London England" target="_blank" rel="nofollow">Specialist Pharmacy</a> and they even have a list of doctors and have links to studies regarding bioidentical progesterone. I would just pick up a phone and speak to a local compounding pharmacist - that's what I did and they gave me a list of docs that are knowledgeable about hormone imbalance. My pharmacists have been a huge part of my care and have been so helpful in answering questions over the years - I think they are under-rated in healthcare!

Hoping for the best hormone health for you,

Sonya