mood control help?

[redskiedmorning]

So one of the joys of Getting Older is that PMS has, for me, become a total emotional rollercoaster. As in I cry my eyes out at the least sign of stress, conflict, emotion, etc. I tear up over theatre reviews in the Georgia Straight and if I mis-deal while playing cards, and totally break down if someone expresses the least amount of frustration towards me or I feel any stress whatsoever in a situation. It's sort of unbearable and generally makes me feel weak and irrational and like I want to hide in a cave for five days. And that's just the PMS.
Does this happen to anyone else? How do you modulate your emotions? What kind of self-care should I be doing? Help.