I am really sorry to hear that your GP has brushed this off on two occasions and acknowledge you for coming here to the beyondblue forums to seek some support. It sounds to me like you have a great deal of insight into what you are experiencing and just need some support to manage your symptoms so you can get through this monthly week of intensity. This would be incredibly disruptive having to anticipate this each month and I certainly think that with a supportive GP or a referral to a psychologist you will be able to find more balance.
You have already articulated a good first step and that is finding a different GP. Prioritising your own self care and wellbeing can be difficult especially when other aspects of life get in front of you such as kids and work. However, take a moment to imagine how great you would be functioning if you had another week per month where you felt capable and had good energy. You would have so much more time to give to yourself and family and even work. Sometimes making a commitment to yourself needs to be written and made into a goal or better yet, a 'SMART' goal. A SMART goal is more specific than just a goal. SMART stands for the following:
S- Specific M- Measurable A-Attainable R-Resalistic T-Timely
You have set a goal for yourself of 'finding a new GP". A SMART goal example might be:
I will phone around on my lunch break and find a new GP (perhaps at a Woman's Health Centre) within 2 weeks time (but not during my tough week) and make an appointment to discuss my symptoms and find a plan so I can better manage my PMDD.
Having a specific goal and timeframe set will help you get on track more efficiently. As you have already seen a GP twice, I know that you are motivated towards keeping your health in check. These are all really good signs. I might also suggest that you keep a record of your symptoms or a mood diary prior to your appointment so you can go through it with you new GP. This can be as simple as using a calendar for a month and writing down your symptoms (if any) on each square.
Another strategy in the interim would be to use this forum as an outlet or even contact the beyondblue support line to have a chat. This can really make a difference even if it is a short term strategy until you see that great new GP I have confidence you will find.
Wishing you the best possible outcome,