I can feel your pain. The prior 2 months have been rough around that time so I am drawing that conclusion that horomones do make things worse. It is getting close again and my nerves are already shot (IBS - D with anxiety). I even ended up in ER pre-menstrual last month. My Dr. thought that I might have appendicitis because I was also having pain in lower right side. Good thing I ended up in ER because I needed 2 bags of potassium. Bad thing that it caused me to miss my Vegas trip and a whole week to recover. Cutting caffeine and exercise would be good first steps. I am still working with my Dr. to find some happy medium.