Dealing with Chronic Pain and Flair-ups During PMS and Period Days

I have hEDS, and PCOS, and supposedly fibromyalgia. I have had chronic joint pain since I was very young, and it recently has spread and worsened to include general body aches and pain. All of these pains seem to greatly worsen with PMS and period days. No doctor of mine is willing to look into this correlation, and it seems to be just a non-issue to them. But some months the pain gets so bad I can barely move, much less function and do necessary daily tasks. Some days I can't even get out of bed, it hurts so bad. Does anyone else seem to notice this happening? I am wrapped up like a mummy for days each cycle, and any advice on how to reduce these flair-ups would be greatly appreciated. Is it the hEDS/PCOS combo, or maybe a weird hormonal reaction and inflammation combo reaction? Thank you and I hope you're doing alright.