That sucks! So sorry to hear that AF has arrived. I've been rooting for you this last week reading your posts!
As far as feeling better, I suppose there's nothing better than doing something totally for yourself--splurging a little at the grocery store and getting yourself something decadent you'd usually be careful to avoid, or going out clothes-shopping and buying that piece that you usually think is a little too expensive. Or just forgetting about work for a day and staying home drinking coffee and reading good books! Go to a matinee movie.
Keep us posted during the next cycle! Good luck, and don't let this get you really down. I suppose we've all felt that way since we're participating in this message board--so you're among friends.