I'm 27 and I have had alot of emotional issues with my cycle....to the point I was a completely different person two weeks before it came-i'd be pissed off at anything and anyone;cry at the drop of the hat;irritable;my thoughts would not stop racing and it would drive me nuts....it got to the point I needed to be off work the days the symptoms would occur because I couldn't think straight. This would happen like clock work:I'd get the symptoms 2 weeks before my cycle and when my cycle came....I'd be myself again. Finally, I spoke in length to my gyno and she suggested a psychatrist for treatment of Pre-Menstural Dysphoric Disorder. (I was started on a few anti depressants, but for me, it made it much worse;eventually I was put on an anti anxiety (klonopin) that i take 2 wks before my cycle is due. It was my choice to go off my birth control pill, and I think that helped too.

Have talked to your gyno about your symptoms?