When I was younger, I noticed more serious mood disruptions around that time. (I wasn't diagnosed around that time though.) I know it is always tempting to go the benzo route, especially when you're in emotional hell. Still, it's better to use as little of benzos as possible. I would agree with either increasing seroquel during that time of the month, if it is otherwise effective or trying another ap. Perhaps, prn combination of those off label mood stabilizers for that time of the month? I'm not a doctor, obviously. Just something to think about.