Oh, yeah! PMS has always been a fun time for me anyway, throw MS into the works and blammo...let the fun begin!
Thank god I'm going through menopause and for the most part my normally horrific PMS has toned down quite a bit. The MS totally makes up for it though. For 5-7 days before my period it's like a flare. And as MS likes to do, it's something different every month.
God I hate inconsistancy! Give me routines! They're easier to cope with.