Anyone out there familiar with PMDD?

Wondering if anyone out there has any experience with this? I ask because I've noticed over the last year an increase in problems I have around "that time", and it seems like more than the standard PMS deal. This past week was the worst by far - I was horribly depressed, no sex drive, irrationally irritable and angry, so exhausted I was falling asleep the minute I laid down. Last night I couldn't sleep, tried to just lay down and relax and let sleep come to me and instead I found myself crying uncontrollably over NOTHING.

I had a similar problem a few months ago, the same thing. It's like watching myself through a window - I know this is not me, I know I'm acting irrationally, and yet I just can't seem to stop myself, I have crying fits or get extremely angry. It's embarrasing - its just not me!

And this always seems to happen around that time; the rest of the time I'm pretty normal. My boyfriend and roomate have confirmed that. I'm hesitant to look into medication just because my mother has a blod clotting disorder and has had clot problems in her legs before, and I'm in my mid-20s and don't want to start down that road.

I had thought at first it was just stress - I work 50 hours a week and my boss is not the easiest person to deal with. But it seems the worst of it, give it a day or 4, and my cycle starts and I'm back to normal. This last time I thought I was just out of sorts because I had been sick with a respiratory infection for a week and a half prior, and was feeling pretty lousy.

Mostly I'm just worried about things continuing to get out of hand. No job or social environment is a good place to have a mood instability, but I train horses and teach children's riding lessons for a living and I really don't want this to trickle down into my work.